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Finding the Fourth Proportional to 529,386.96, 730,553.45 and 287,668.96

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Solution

The fourth proportional to 529,386.96, 730,553.45 and 287,668.96 is: 396,982.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,386.96 : 730,553.45 = 287,668.96 : x
  2. Step 2: Convert to fraction form
    529,386.96/730,553.45 = 287,668.96/x
  3. Step 3: Cross multiply
    529,386.96x = 730,553.45 × 287,668.96
  4. Step 4: Simplify right side
    529,386.96x = 210,157,547,533.15
  5. Step 5: Solve for x
    x = 210,157,547,533.15/529,386.96
  6. Step 6: Final answer
    x = 396,982.86

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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.