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Finding the Fourth Proportional to 153,930.48, 230,691.60 and 79,047.60

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Solution

The fourth proportional to 153,930.48, 230,691.60 and 79,047.60 is: 118,466.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,930.48 : 230,691.60 = 79,047.60 : x
  2. Step 2: Convert to fraction form
    153,930.48/230,691.60 = 79,047.60/x
  3. Step 3: Cross multiply
    153,930.48x = 230,691.60 × 79,047.60
  4. Step 4: Simplify right side
    153,930.48x = 18,235,617,320.16
  5. Step 5: Solve for x
    x = 18,235,617,320.16/153,930.48
  6. Step 6: Final answer
    x = 118,466.58

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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.