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Finding the Fourth Proportional to 61,596.48, 92,385.12 and 20,043.20

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Solution

The fourth proportional to 61,596.48, 92,385.12 and 20,043.20 is: 30,061.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,596.48 : 92,385.12 = 20,043.20 : x
  2. Step 2: Convert to fraction form
    61,596.48/92,385.12 = 20,043.20/x
  3. Step 3: Cross multiply
    61,596.48x = 92,385.12 × 20,043.20
  4. Step 4: Simplify right side
    61,596.48x = 1,851,693,437.18
  5. Step 5: Solve for x
    x = 1,851,693,437.18/61,596.48
  6. Step 6: Final answer
    x = 30,061.68

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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.