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Finding the Fourth Proportional to 186,639.56, 279,793.56 and 72,761.12

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Solution

The fourth proportional to 186,639.56, 279,793.56 and 72,761.12 is: 109,077.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,639.56 : 279,793.56 = 72,761.12 : x
  2. Step 2: Convert to fraction form
    186,639.56/279,793.56 = 72,761.12/x
  3. Step 3: Cross multiply
    186,639.56x = 279,793.56 × 72,761.12
  4. Step 4: Simplify right side
    186,639.56x = 20,358,092,794.39
  5. Step 5: Solve for x
    x = 20,358,092,794.39/186,639.56
  6. Step 6: Final answer
    x = 109,077.05

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1.5x scale

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.