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Finding the Fourth Proportional to 124,660.64, 186,879.76 and 45,756.56

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Solution

The fourth proportional to 124,660.64, 186,879.76 and 45,756.56 is: 68,594.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,660.64 : 186,879.76 = 45,756.56 : x
  2. Step 2: Convert to fraction form
    124,660.64/186,879.76 = 45,756.56/x
  3. Step 3: Cross multiply
    124,660.64x = 186,879.76 × 45,756.56
  4. Step 4: Simplify right side
    124,660.64x = 8,550,974,951.23
  5. Step 5: Solve for x
    x = 8,550,974,951.23/124,660.64
  6. Step 6: Final answer
    x = 68,594.02

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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.