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Finding the Fourth Proportional to 73,681.60, 110,539.68 and 29,310.88

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Solution

The fourth proportional to 73,681.60, 110,539.68 and 29,310.88 is: 43,973.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,681.60 : 110,539.68 = 29,310.88 : x
  2. Step 2: Convert to fraction form
    73,681.60/110,539.68 = 29,310.88/x
  3. Step 3: Cross multiply
    73,681.60x = 110,539.68 × 29,310.88
  4. Step 4: Simplify right side
    73,681.60x = 3,240,015,295.72
  5. Step 5: Solve for x
    x = 3,240,015,295.72/73,681.60
  6. Step 6: Final answer
    x = 43,973.19

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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.