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Finding the Fourth Proportional to 172,132.78, 237,565.47 and 96,681.28

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Solution

The fourth proportional to 172,132.78, 237,565.47 and 96,681.28 is: 133,432.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,132.78 : 237,565.47 = 96,681.28 : x
  2. Step 2: Convert to fraction form
    172,132.78/237,565.47 = 96,681.28/x
  3. Step 3: Cross multiply
    172,132.78x = 237,565.47 × 96,681.28
  4. Step 4: Simplify right side
    172,132.78x = 22,968,133,723.40
  5. Step 5: Solve for x
    x = 22,968,133,723.40/172,132.78
  6. Step 6: Final answer
    x = 133,432.65

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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.