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Finding the Fourth Proportional to 91,569.84, 137,229.84 and 56,043.48

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Solution

The fourth proportional to 91,569.84, 137,229.84 and 56,043.48 is: 83,988.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,569.84 : 137,229.84 = 56,043.48 : x
  2. Step 2: Convert to fraction form
    91,569.84/137,229.84 = 56,043.48/x
  3. Step 3: Cross multiply
    91,569.84x = 137,229.84 × 56,043.48
  4. Step 4: Simplify right side
    91,569.84x = 7,690,837,793.44
  5. Step 5: Solve for x
    x = 7,690,837,793.44/91,569.84
  6. Step 6: Final answer
    x = 83,988.77

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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.