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Finding the Fourth Proportional to 48,286.60, 72,429.90 and 44,139.40

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Solution

The fourth proportional to 48,286.60, 72,429.90 and 44,139.40 is: 66,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,286.60 : 72,429.90 = 44,139.40 : x
  2. Step 2: Convert to fraction form
    48,286.60/72,429.90 = 44,139.40/x
  3. Step 3: Cross multiply
    48,286.60x = 72,429.90 × 44,139.40
  4. Step 4: Simplify right side
    48,286.60x = 3,197,012,328.06
  5. Step 5: Solve for x
    x = 3,197,012,328.06/48,286.60
  6. Step 6: Final answer
    x = 66,209.10

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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.