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Finding the Fourth Proportional to 83,316.60, 124,865.55 and 33,355.80

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Solution

The fourth proportional to 83,316.60, 124,865.55 and 33,355.80 is: 49,989.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,316.60 : 124,865.55 = 33,355.80 : x
  2. Step 2: Convert to fraction form
    83,316.60/124,865.55 = 33,355.80/x
  3. Step 3: Cross multiply
    83,316.60x = 124,865.55 × 33,355.80
  4. Step 4: Simplify right side
    83,316.60x = 4,164,990,312.69
  5. Step 5: Solve for x
    x = 4,164,990,312.69/83,316.60
  6. Step 6: Final answer
    x = 49,989.92

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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.