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Finding the Fourth Proportional to 49,809.70, 74,605.20 and 43,248.70

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Solution

The fourth proportional to 49,809.70, 74,605.20 and 43,248.70 is: 64,778.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,809.70 : 74,605.20 = 43,248.70 : x
  2. Step 2: Convert to fraction form
    49,809.70/74,605.20 = 43,248.70/x
  3. Step 3: Cross multiply
    49,809.70x = 74,605.20 × 43,248.70
  4. Step 4: Simplify right side
    49,809.70x = 3,226,577,913.24
  5. Step 5: Solve for x
    x = 3,226,577,913.24/49,809.70
  6. Step 6: Final answer
    x = 64,778.10

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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.