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Finding the Fourth Proportional to 521,503.01, 782,583.59 and 221,983.12

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Solution

The fourth proportional to 521,503.01, 782,583.59 and 221,983.12 is: 333,114.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,503.01 : 782,583.59 = 221,983.12 : x
  2. Step 2: Convert to fraction form
    521,503.01/782,583.59 = 221,983.12/x
  3. Step 3: Cross multiply
    521,503.01x = 782,583.59 × 221,983.12
  4. Step 4: Simplify right side
    521,503.01x = 173,720,346,969.00
  5. Step 5: Solve for x
    x = 173,720,346,969.00/521,503.01
  6. Step 6: Final answer
    x = 333,114.75

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.