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Finding the Fourth Proportional to 57,246.83, 79,000.90 and 31,751.42

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Solution

The fourth proportional to 57,246.83, 79,000.90 and 31,751.42 is: 43,817.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,246.83 : 79,000.90 = 31,751.42 : x
  2. Step 2: Convert to fraction form
    57,246.83/79,000.90 = 31,751.42/x
  3. Step 3: Cross multiply
    57,246.83x = 79,000.90 × 31,751.42
  4. Step 4: Simplify right side
    57,246.83x = 2,508,390,756.28
  5. Step 5: Solve for x
    x = 2,508,390,756.28/57,246.83
  6. Step 6: Final answer
    x = 43,817.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.