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Finding the Fourth Proportional to 110,930.40, 153,048.96 and 63,180.90

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Solution

The fourth proportional to 110,930.40, 153,048.96 and 63,180.90 is: 87,169.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,930.40 : 153,048.96 = 63,180.90 : x
  2. Step 2: Convert to fraction form
    110,930.40/153,048.96 = 63,180.90/x
  3. Step 3: Cross multiply
    110,930.40x = 153,048.96 × 63,180.90
  4. Step 4: Simplify right side
    110,930.40x = 9,669,771,036.86
  5. Step 5: Solve for x
    x = 9,669,771,036.86/110,930.40
  6. Step 6: Final answer
    x = 87,169.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.