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Finding the Fourth Proportional to 91,135.02, 125,769.33 and 52,891.68

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Solution

The fourth proportional to 91,135.02, 125,769.33 and 52,891.68 is: 72,992.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,135.02 : 125,769.33 = 52,891.68 : x
  2. Step 2: Convert to fraction form
    91,135.02/125,769.33 = 52,891.68/x
  3. Step 3: Cross multiply
    91,135.02x = 125,769.33 × 52,891.68
  4. Step 4: Simplify right side
    91,135.02x = 6,652,151,156.17
  5. Step 5: Solve for x
    x = 6,652,151,156.17/91,135.02
  6. Step 6: Final answer
    x = 72,992.26

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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.