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Finding the Fourth Proportional to 49,143.70, 73,606.20 and 42,582.70

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Solution

The fourth proportional to 49,143.70, 73,606.20 and 42,582.70 is: 63,779.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,143.70 : 73,606.20 = 42,582.70 : x
  2. Step 2: Convert to fraction form
    49,143.70/73,606.20 = 42,582.70/x
  3. Step 3: Cross multiply
    49,143.70x = 73,606.20 × 42,582.70
  4. Step 4: Simplify right side
    49,143.70x = 3,134,350,732.74
  5. Step 5: Solve for x
    x = 3,134,350,732.74/49,143.70
  6. Step 6: Final answer
    x = 63,779.30

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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.