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Finding the Fourth Proportional to 539,786.16, 744,159.96 and 386,948.88

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Solution

The fourth proportional to 539,786.16, 744,159.96 and 386,948.88 is: 533,455.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,786.16 : 744,159.96 = 386,948.88 : x
  2. Step 2: Convert to fraction form
    539,786.16/744,159.96 = 386,948.88/x
  3. Step 3: Cross multiply
    539,786.16x = 744,159.96 × 386,948.88
  4. Step 4: Simplify right side
    539,786.16x = 287,951,863,062.85
  5. Step 5: Solve for x
    x = 287,951,863,062.85/539,786.16
  6. Step 6: Final answer
    x = 533,455.44

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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.