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Finding the Fourth Proportional to 74,479.60, 111,724.80 and 44,833.60

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Solution

The fourth proportional to 74,479.60, 111,724.80 and 44,833.60 is: 67,253.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,479.60 : 111,724.80 = 44,833.60 : x
  2. Step 2: Convert to fraction form
    74,479.60/111,724.80 = 44,833.60/x
  3. Step 3: Cross multiply
    74,479.60x = 111,724.80 × 44,833.60
  4. Step 4: Simplify right side
    74,479.60x = 5,009,024,993.28
  5. Step 5: Solve for x
    x = 5,009,024,993.28/74,479.60
  6. Step 6: Final answer
    x = 67,253.65

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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.