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Finding the Fourth Proportional to 124,881.80, 187,322.70 and 119,049.80

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Solution

The fourth proportional to 124,881.80, 187,322.70 and 119,049.80 is: 178,574.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,881.80 : 187,322.70 = 119,049.80 : x
  2. Step 2: Convert to fraction form
    124,881.80/187,322.70 = 119,049.80/x
  3. Step 3: Cross multiply
    124,881.80x = 187,322.70 × 119,049.80
  4. Step 4: Simplify right side
    124,881.80x = 22,300,729,970.46
  5. Step 5: Solve for x
    x = 22,300,729,970.46/124,881.80
  6. Step 6: Final answer
    x = 178,574.70

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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.