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Finding the Fourth Proportional to 60,877.68, 91,345.48 and 42,186.48

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Solution

The fourth proportional to 60,877.68, 91,345.48 and 42,186.48 is: 63,299.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,877.68 : 91,345.48 = 42,186.48 : x
  2. Step 2: Convert to fraction form
    60,877.68/91,345.48 = 42,186.48/x
  3. Step 3: Cross multiply
    60,877.68x = 91,345.48 × 42,186.48
  4. Step 4: Simplify right side
    60,877.68x = 3,853,544,265.11
  5. Step 5: Solve for x
    x = 3,853,544,265.11/60,877.68
  6. Step 6: Final answer
    x = 63,299.79

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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.