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Finding the Fourth Proportional to 529,844.76, 731,156.22 and 303,504.84

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Solution

The fourth proportional to 529,844.76, 731,156.22 and 303,504.84 is: 418,819.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,844.76 : 731,156.22 = 303,504.84 : x
  2. Step 2: Convert to fraction form
    529,844.76/731,156.22 = 303,504.84/x
  3. Step 3: Cross multiply
    529,844.76x = 731,156.22 × 303,504.84
  4. Step 4: Simplify right side
    529,844.76x = 221,909,451,566.11
  5. Step 5: Solve for x
    x = 221,909,451,566.11/529,844.76
  6. Step 6: Final answer
    x = 418,819.75

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Half scale
Find fourth proportional to 1,059,689.52, 1,462,312.44 and 607,009.68
Double scale
Find fourth proportional to 529,845.76, 731,157.60 and 303,505.84
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.