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Finding the Fourth Proportional to 124,578.71, 186,861.36 and 61,335.78

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Solution

The fourth proportional to 124,578.71, 186,861.36 and 61,335.78 is: 92,000.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,578.71 : 186,861.36 = 61,335.78 : x
  2. Step 2: Convert to fraction form
    124,578.71/186,861.36 = 61,335.78/x
  3. Step 3: Cross multiply
    124,578.71x = 186,861.36 × 61,335.78
  4. Step 4: Simplify right side
    124,578.71x = 11,461,287,847.84
  5. Step 5: Solve for x
    x = 11,461,287,847.84/124,578.71
  6. Step 6: Final answer
    x = 92,000.37

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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.