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Finding the Fourth Proportional to 61,855.85, 92,830.42 and 45,258.70

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Solution

The fourth proportional to 61,855.85, 92,830.42 and 45,258.70 is: 67,922.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,855.85 : 92,830.42 = 45,258.70 : x
  2. Step 2: Convert to fraction form
    61,855.85/92,830.42 = 45,258.70/x
  3. Step 3: Cross multiply
    61,855.85x = 92,830.42 × 45,258.70
  4. Step 4: Simplify right side
    61,855.85x = 4,201,384,129.65
  5. Step 5: Solve for x
    x = 4,201,384,129.65/61,855.85
  6. Step 6: Final answer
    x = 67,922.18

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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.