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Finding the Fourth Proportional to 61,861.60, 92,648.04 and 45,180.34

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Solution

The fourth proportional to 61,861.60, 92,648.04 and 45,180.34 is: 67,665.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,861.60 : 92,648.04 = 45,180.34 : x
  2. Step 2: Convert to fraction form
    61,861.60/92,648.04 = 45,180.34/x
  3. Step 3: Cross multiply
    61,861.60x = 92,648.04 × 45,180.34
  4. Step 4: Simplify right side
    61,861.60x = 4,185,869,947.53
  5. Step 5: Solve for x
    x = 4,185,869,947.53/61,861.60
  6. Step 6: Final answer
    x = 67,665.08

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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.