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Finding the Fourth Proportional to 41,143.67, 61,715.53 and 9,978.92

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Solution

The fourth proportional to 41,143.67, 61,715.53 and 9,978.92 is: 14,968.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,143.67 : 61,715.53 = 9,978.92 : x
  2. Step 2: Convert to fraction form
    41,143.67/61,715.53 = 9,978.92/x
  3. Step 3: Cross multiply
    41,143.67x = 61,715.53 × 9,978.92
  4. Step 4: Simplify right side
    41,143.67x = 615,854,336.63
  5. Step 5: Solve for x
    x = 615,854,336.63/41,143.67
  6. Step 6: Final answer
    x = 14,968.39

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1.5x scale

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.