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Finding the Fourth Proportional to 48,624.60, 72,936.90 and 45,344.10

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Solution

The fourth proportional to 48,624.60, 72,936.90 and 45,344.10 is: 68,016.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,624.60 : 72,936.90 = 45,344.10 : x
  2. Step 2: Convert to fraction form
    48,624.60/72,936.90 = 45,344.10/x
  3. Step 3: Cross multiply
    48,624.60x = 72,936.90 × 45,344.10
  4. Step 4: Simplify right side
    48,624.60x = 3,307,258,087.29
  5. Step 5: Solve for x
    x = 3,307,258,087.29/48,624.60
  6. Step 6: Final answer
    x = 68,016.15

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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.