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Finding the Fourth Proportional to 125,016, 172,520.76 and 67,654.08

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Solution

The fourth proportional to 125,016, 172,520.76 and 67,654.08 is: 93,361.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,016 : 172,520.76 = 67,654.08 : x
  2. Step 2: Convert to fraction form
    125,016/172,520.76 = 67,654.08/x
  3. Step 3: Cross multiply
    125,016x = 172,520.76 × 67,654.08
  4. Step 4: Simplify right side
    125,016x = 11,671,733,298.70
  5. Step 5: Solve for x
    x = 11,671,733,298.70/125,016
  6. Step 6: Final answer
    x = 93,361.92

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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.