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Finding the Fourth Proportional to 61,631.80, 92,447.70 and 59,212.60

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Solution

The fourth proportional to 61,631.80, 92,447.70 and 59,212.60 is: 88,818.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,631.80 : 92,447.70 = 59,212.60 : x
  2. Step 2: Convert to fraction form
    61,631.80/92,447.70 = 59,212.60/x
  3. Step 3: Cross multiply
    61,631.80x = 92,447.70 × 59,212.60
  4. Step 4: Simplify right side
    61,631.80x = 5,474,068,681.02
  5. Step 5: Solve for x
    x = 5,474,068,681.02/61,631.80
  6. Step 6: Final answer
    x = 88,818.90

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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.