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Finding the Fourth Proportional to 61,209.40, 91,814.10 and 58,876.60

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Solution

The fourth proportional to 61,209.40, 91,814.10 and 58,876.60 is: 88,314.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,209.40 : 91,814.10 = 58,876.60 : x
  2. Step 2: Convert to fraction form
    61,209.40/91,814.10 = 58,876.60/x
  3. Step 3: Cross multiply
    61,209.40x = 91,814.10 × 58,876.60
  4. Step 4: Simplify right side
    61,209.40x = 5,405,702,040.06
  5. Step 5: Solve for x
    x = 5,405,702,040.06/61,209.40
  6. Step 6: Final answer
    x = 88,314.90

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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.