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Finding the Fourth Proportional to 571,702.24, 788,929.20 and 317,077.12

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Solution

The fourth proportional to 571,702.24, 788,929.20 and 317,077.12 is: 437,555.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,702.24 : 788,929.20 = 317,077.12 : x
  2. Step 2: Convert to fraction form
    571,702.24/788,929.20 = 317,077.12/x
  3. Step 3: Cross multiply
    571,702.24x = 788,929.20 × 317,077.12
  4. Step 4: Simplify right side
    571,702.24x = 250,151,398,619.90
  5. Step 5: Solve for x
    x = 250,151,398,619.90/571,702.24
  6. Step 6: Final answer
    x = 437,555.39

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Double scale
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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.