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Finding the Fourth Proportional to 137,572.48, 206,181.05 and 61,615.50

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Solution

The fourth proportional to 137,572.48, 206,181.05 and 61,615.50 is: 92,343.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,572.48 : 206,181.05 = 61,615.50 : x
  2. Step 2: Convert to fraction form
    137,572.48/206,181.05 = 61,615.50/x
  3. Step 3: Cross multiply
    137,572.48x = 206,181.05 × 61,615.50
  4. Step 4: Simplify right side
    137,572.48x = 12,703,948,564.79
  5. Step 5: Solve for x
    x = 12,703,948,564.79/137,572.48
  6. Step 6: Final answer
    x = 92,343.68

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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.