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Finding the Fourth Proportional to 61,872.40, 92,810.04 and 15,125.68

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Solution

The fourth proportional to 61,872.40, 92,810.04 and 15,125.68 is: 22,688.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,872.40 : 92,810.04 = 15,125.68 : x
  2. Step 2: Convert to fraction form
    61,872.40/92,810.04 = 15,125.68/x
  3. Step 3: Cross multiply
    61,872.40x = 92,810.04 × 15,125.68
  4. Step 4: Simplify right side
    61,872.40x = 1,403,814,965.83
  5. Step 5: Solve for x
    x = 1,403,814,965.83/61,872.40
  6. Step 6: Final answer
    x = 22,688.87

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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.