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Finding the Fourth Proportional to 663,158.97, 915,160.55 and 361,352.97

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Solution

The fourth proportional to 663,158.97, 915,160.55 and 361,352.97 is: 498,667.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,158.97 : 915,160.55 = 361,352.97 : x
  2. Step 2: Convert to fraction form
    663,158.97/915,160.55 = 361,352.97/x
  3. Step 3: Cross multiply
    663,158.97x = 915,160.55 × 361,352.97
  4. Step 4: Simplify right side
    663,158.97x = 330,695,980,962.57
  5. Step 5: Solve for x
    x = 330,695,980,962.57/663,158.97
  6. Step 6: Final answer
    x = 498,667.73

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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.