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Finding the Fourth Proportional to 70,945.92, 106,418.88 and 34,001.28

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Solution

The fourth proportional to 70,945.92, 106,418.88 and 34,001.28 is: 51,001.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,945.92 : 106,418.88 = 34,001.28 : x
  2. Step 2: Convert to fraction form
    70,945.92/106,418.88 = 34,001.28/x
  3. Step 3: Cross multiply
    70,945.92x = 106,418.88 × 34,001.28
  4. Step 4: Simplify right side
    70,945.92x = 3,618,378,136.17
  5. Step 5: Solve for x
    x = 3,618,378,136.17/70,945.92
  6. Step 6: Final answer
    x = 51,001.92

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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.