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Finding the Fourth Proportional to 70,717.76, 97,593.12 and 38,889.44

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Solution

The fourth proportional to 70,717.76, 97,593.12 and 38,889.44 is: 53,668.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,717.76 : 97,593.12 = 38,889.44 : x
  2. Step 2: Convert to fraction form
    70,717.76/97,593.12 = 38,889.44/x
  3. Step 3: Cross multiply
    70,717.76x = 97,593.12 × 38,889.44
  4. Step 4: Simplify right side
    70,717.76x = 3,795,341,784.65
  5. Step 5: Solve for x
    x = 3,795,341,784.65/70,717.76
  6. Step 6: Final answer
    x = 53,668.86

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1.5x scale

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.