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Finding the Fourth Proportional to 529,308.14, 730,448.22 and 287,592.68

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Solution

The fourth proportional to 529,308.14, 730,448.22 and 287,592.68 is: 396,879.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,308.14 : 730,448.22 = 287,592.68 : x
  2. Step 2: Convert to fraction form
    529,308.14/730,448.22 = 287,592.68/x
  3. Step 3: Cross multiply
    529,308.14x = 730,448.22 × 287,592.68
  4. Step 4: Simplify right side
    529,308.14x = 210,071,561,191.03
  5. Step 5: Solve for x
    x = 210,071,561,191.03/529,308.14
  6. Step 6: Final answer
    x = 396,879.52

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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.