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Finding the Fourth Proportional to 83,186.40, 124,520.40 and 59,858.40

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Solution

The fourth proportional to 83,186.40, 124,520.40 and 59,858.40 is: 89,601.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,186.40 : 124,520.40 = 59,858.40 : x
  2. Step 2: Convert to fraction form
    83,186.40/124,520.40 = 59,858.40/x
  3. Step 3: Cross multiply
    83,186.40x = 124,520.40 × 59,858.40
  4. Step 4: Simplify right side
    83,186.40x = 7,453,591,911.36
  5. Step 5: Solve for x
    x = 7,453,591,911.36/83,186.40
  6. Step 6: Final answer
    x = 89,601.09

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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.