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Finding the Fourth Proportional to 172,358.16, 258,535.32 and 67,250.96

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Solution

The fourth proportional to 172,358.16, 258,535.32 and 67,250.96 is: 100,875.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,358.16 : 258,535.32 = 67,250.96 : x
  2. Step 2: Convert to fraction form
    172,358.16/258,535.32 = 67,250.96/x
  3. Step 3: Cross multiply
    172,358.16x = 258,535.32 × 67,250.96
  4. Step 4: Simplify right side
    172,358.16x = 17,386,748,463.91
  5. Step 5: Solve for x
    x = 17,386,748,463.91/172,358.16
  6. Step 6: Final answer
    x = 100,875.69

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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.