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Finding the Fourth Proportional to 61,657.61, 92,453.10 and 21,666.29

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Solution

The fourth proportional to 61,657.61, 92,453.10 and 21,666.29 is: 32,487.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,657.61 : 92,453.10 = 21,666.29 : x
  2. Step 2: Convert to fraction form
    61,657.61/92,453.10 = 21,666.29/x
  3. Step 3: Cross multiply
    61,657.61x = 92,453.10 × 21,666.29
  4. Step 4: Simplify right side
    61,657.61x = 2,003,115,132.48
  5. Step 5: Solve for x
    x = 2,003,115,132.48/61,657.61
  6. Step 6: Final answer
    x = 32,487.72

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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.