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Finding the Fourth Proportional to 61,405.70, 92,108.55 and 45,853.70

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Solution

The fourth proportional to 61,405.70, 92,108.55 and 45,853.70 is: 68,780.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,405.70 : 92,108.55 = 45,853.70 : x
  2. Step 2: Convert to fraction form
    61,405.70/92,108.55 = 45,853.70/x
  3. Step 3: Cross multiply
    61,405.70x = 92,108.55 × 45,853.70
  4. Step 4: Simplify right side
    61,405.70x = 4,223,517,819.14
  5. Step 5: Solve for x
    x = 4,223,517,819.14/61,405.70
  6. Step 6: Final answer
    x = 68,780.55

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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.