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Finding the Fourth Proportional to 472,239.72, 708,171.66 and 172,652.04

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Solution

The fourth proportional to 472,239.72, 708,171.66 and 172,652.04 is: 258,909.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,239.72 : 708,171.66 = 172,652.04 : x
  2. Step 2: Convert to fraction form
    472,239.72/708,171.66 = 172,652.04/x
  3. Step 3: Cross multiply
    472,239.72x = 708,171.66 × 172,652.04
  4. Step 4: Simplify right side
    472,239.72x = 122,267,281,769.19
  5. Step 5: Solve for x
    x = 122,267,281,769.19/472,239.72
  6. Step 6: Final answer
    x = 258,909.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.