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Finding the Fourth Proportional to 61,861.60, 92,986.80 and 60,695.20

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Solution

The fourth proportional to 61,861.60, 92,986.80 and 60,695.20 is: 91,233.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,861.60 : 92,986.80 = 60,695.20 : x
  2. Step 2: Convert to fraction form
    61,861.60/92,986.80 = 60,695.20/x
  3. Step 3: Cross multiply
    61,861.60x = 92,986.80 × 60,695.20
  4. Step 4: Simplify right side
    61,861.60x = 5,643,852,423.36
  5. Step 5: Solve for x
    x = 5,643,852,423.36/61,861.60
  6. Step 6: Final answer
    x = 91,233.53

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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.