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Finding the Fourth Proportional to 124,638.59, 186,982.53 and 45,753.50

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Solution

The fourth proportional to 124,638.59, 186,982.53 and 45,753.50 is: 68,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,638.59 : 186,982.53 = 45,753.50 : x
  2. Step 2: Convert to fraction form
    124,638.59/186,982.53 = 45,753.50/x
  3. Step 3: Cross multiply
    124,638.59x = 186,982.53 × 45,753.50
  4. Step 4: Simplify right side
    124,638.59x = 8,555,105,186.36
  5. Step 5: Solve for x
    x = 8,555,105,186.36/124,638.59
  6. Step 6: Final answer
    x = 68,639.30

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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.