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Finding the Fourth Proportional to 92,569.80, 138,854.70 and 53,203.80

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Solution

The fourth proportional to 92,569.80, 138,854.70 and 53,203.80 is: 79,805.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,569.80 : 138,854.70 = 53,203.80 : x
  2. Step 2: Convert to fraction form
    92,569.80/138,854.70 = 53,203.80/x
  3. Step 3: Cross multiply
    92,569.80x = 138,854.70 × 53,203.80
  4. Step 4: Simplify right side
    92,569.80x = 7,387,597,687.86
  5. Step 5: Solve for x
    x = 7,387,597,687.86/92,569.80
  6. Step 6: Final answer
    x = 79,805.70

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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.