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Finding the Fourth Proportional to 87,265.74, 120,426.74 and 48,503.57

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Solution

The fourth proportional to 87,265.74, 120,426.74 and 48,503.57 is: 66,934.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,265.74 : 120,426.74 = 48,503.57 : x
  2. Step 2: Convert to fraction form
    87,265.74/120,426.74 = 48,503.57/x
  3. Step 3: Cross multiply
    87,265.74x = 120,426.74 × 48,503.57
  4. Step 4: Simplify right side
    87,265.74x = 5,841,125,968.81
  5. Step 5: Solve for x
    x = 5,841,125,968.81/87,265.74
  6. Step 6: Final answer
    x = 66,934.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.