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Finding the Fourth Proportional to 41,292.80, 56,978.88 and 34,190.72

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Solution

The fourth proportional to 41,292.80, 56,978.88 and 34,190.72 is: 47,178.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,292.80 : 56,978.88 = 34,190.72 : x
  2. Step 2: Convert to fraction form
    41,292.80/56,978.88 = 34,190.72/x
  3. Step 3: Cross multiply
    41,292.80x = 56,978.88 × 34,190.72
  4. Step 4: Simplify right side
    41,292.80x = 1,948,148,931.99
  5. Step 5: Solve for x
    x = 1,948,148,931.99/41,292.80
  6. Step 6: Final answer
    x = 47,178.90

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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.