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Finding the Fourth Proportional to 124,047.60, 186,013.80 and 53,890.80

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Solution

The fourth proportional to 124,047.60, 186,013.80 and 53,890.80 is: 80,811.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,047.60 : 186,013.80 = 53,890.80 : x
  2. Step 2: Convert to fraction form
    124,047.60/186,013.80 = 53,890.80/x
  3. Step 3: Cross multiply
    124,047.60x = 186,013.80 × 53,890.80
  4. Step 4: Simplify right side
    124,047.60x = 10,024,432,493.04
  5. Step 5: Solve for x
    x = 10,024,432,493.04/124,047.60
  6. Step 6: Final answer
    x = 80,811.18

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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.