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Finding the Fourth Proportional to 61,115.60, 91,630.20 and 23,661.20

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Solution

The fourth proportional to 61,115.60, 91,630.20 and 23,661.20 is: 35,475.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,115.60 : 91,630.20 = 23,661.20 : x
  2. Step 2: Convert to fraction form
    61,115.60/91,630.20 = 23,661.20/x
  3. Step 3: Cross multiply
    61,115.60x = 91,630.20 × 23,661.20
  4. Step 4: Simplify right side
    61,115.60x = 2,168,080,488.24
  5. Step 5: Solve for x
    x = 2,168,080,488.24/61,115.60
  6. Step 6: Final answer
    x = 35,475.07

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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.