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Finding the Fourth Proportional to 124,700.40, 187,050.60 and 74,836.80

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Solution

The fourth proportional to 124,700.40, 187,050.60 and 74,836.80 is: 112,255.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,700.40 : 187,050.60 = 74,836.80 : x
  2. Step 2: Convert to fraction form
    124,700.40/187,050.60 = 74,836.80/x
  3. Step 3: Cross multiply
    124,700.40x = 187,050.60 × 74,836.80
  4. Step 4: Simplify right side
    124,700.40x = 13,998,268,342.08
  5. Step 5: Solve for x
    x = 13,998,268,342.08/124,700.40
  6. Step 6: Final answer
    x = 112,255.20

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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.