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Finding the Fourth Proportional to 73,655.55, 110,397.60 and 42,087.74

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Solution

The fourth proportional to 73,655.55, 110,397.60 and 42,087.74 is: 63,082.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,655.55 : 110,397.60 = 42,087.74 : x
  2. Step 2: Convert to fraction form
    73,655.55/110,397.60 = 42,087.74/x
  3. Step 3: Cross multiply
    73,655.55x = 110,397.60 × 42,087.74
  4. Step 4: Simplify right side
    73,655.55x = 4,646,384,933.44
  5. Step 5: Solve for x
    x = 4,646,384,933.44/73,655.55
  6. Step 6: Final answer
    x = 63,082.62

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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.