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Finding the Fourth Proportional to 505,868.40, 758,802.60 and 293,000.40

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Solution

The fourth proportional to 505,868.40, 758,802.60 and 293,000.40 is: 439,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,868.40 : 758,802.60 = 293,000.40 : x
  2. Step 2: Convert to fraction form
    505,868.40/758,802.60 = 293,000.40/x
  3. Step 3: Cross multiply
    505,868.40x = 758,802.60 × 293,000.40
  4. Step 4: Simplify right side
    505,868.40x = 222,329,465,321.04
  5. Step 5: Solve for x
    x = 222,329,465,321.04/505,868.40
  6. Step 6: Final answer
    x = 439,500.60

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Double scale
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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.