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Finding the Fourth Proportional to 42,358.40, 63,464.70 and 27,559.70

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Solution

The fourth proportional to 42,358.40, 63,464.70 and 27,559.70 is: 41,292.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,358.40 : 63,464.70 = 27,559.70 : x
  2. Step 2: Convert to fraction form
    42,358.40/63,464.70 = 27,559.70/x
  3. Step 3: Cross multiply
    42,358.40x = 63,464.70 × 27,559.70
  4. Step 4: Simplify right side
    42,358.40x = 1,749,068,092.59
  5. Step 5: Solve for x
    x = 1,749,068,092.59/42,358.40
  6. Step 6: Final answer
    x = 41,292.12

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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.