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Finding the Fourth Proportional to 67,301.20, 100,951.80 and 66,005.20

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Solution

The fourth proportional to 67,301.20, 100,951.80 and 66,005.20 is: 99,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,301.20 : 100,951.80 = 66,005.20 : x
  2. Step 2: Convert to fraction form
    67,301.20/100,951.80 = 66,005.20/x
  3. Step 3: Cross multiply
    67,301.20x = 100,951.80 × 66,005.20
  4. Step 4: Simplify right side
    67,301.20x = 6,663,343,749.36
  5. Step 5: Solve for x
    x = 6,663,343,749.36/67,301.20
  6. Step 6: Final answer
    x = 99,007.80

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1.5x scale

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.