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Finding the Fourth Proportional to 49,639.80, 74,459.70 and 29,956.80

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Solution

The fourth proportional to 49,639.80, 74,459.70 and 29,956.80 is: 44,935.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,639.80 : 74,459.70 = 29,956.80 : x
  2. Step 2: Convert to fraction form
    49,639.80/74,459.70 = 29,956.80/x
  3. Step 3: Cross multiply
    49,639.80x = 74,459.70 × 29,956.80
  4. Step 4: Simplify right side
    49,639.80x = 2,230,574,340.96
  5. Step 5: Solve for x
    x = 2,230,574,340.96/49,639.80
  6. Step 6: Final answer
    x = 44,935.20

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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.