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Finding the Fourth Proportional to 61,773.12, 92,659.68 and 43,387.20

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Solution

The fourth proportional to 61,773.12, 92,659.68 and 43,387.20 is: 65,080.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,773.12 : 92,659.68 = 43,387.20 : x
  2. Step 2: Convert to fraction form
    61,773.12/92,659.68 = 43,387.20/x
  3. Step 3: Cross multiply
    61,773.12x = 92,659.68 × 43,387.20
  4. Step 4: Simplify right side
    61,773.12x = 4,020,244,068.10
  5. Step 5: Solve for x
    x = 4,020,244,068.10/61,773.12
  6. Step 6: Final answer
    x = 65,080.80

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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.