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Finding the Fourth Proportional to 124,658.32, 172,035.48 and 68,074.96

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Solution

The fourth proportional to 124,658.32, 172,035.48 and 68,074.96 is: 93,947.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,658.32 : 172,035.48 = 68,074.96 : x
  2. Step 2: Convert to fraction form
    124,658.32/172,035.48 = 68,074.96/x
  3. Step 3: Cross multiply
    124,658.32x = 172,035.48 × 68,074.96
  4. Step 4: Simplify right side
    124,658.32x = 11,711,308,419.58
  5. Step 5: Solve for x
    x = 11,711,308,419.58/124,658.32
  6. Step 6: Final answer
    x = 93,947.27

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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.