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Finding the Fourth Proportional to 83,220.66, 124,861.64 and 59,715.81

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Solution

The fourth proportional to 83,220.66, 124,861.64 and 59,715.81 is: 89,595.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,220.66 : 124,861.64 = 59,715.81 : x
  2. Step 2: Convert to fraction form
    83,220.66/124,861.64 = 59,715.81/x
  3. Step 3: Cross multiply
    83,220.66x = 124,861.64 × 59,715.81
  4. Step 4: Simplify right side
    83,220.66x = 7,456,213,671.95
  5. Step 5: Solve for x
    x = 7,456,213,671.95/83,220.66
  6. Step 6: Final answer
    x = 89,595.70

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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.