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Finding the Fourth Proportional to 70,115.44, 96,758.09 and 39,900.14

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Solution

The fourth proportional to 70,115.44, 96,758.09 and 39,900.14 is: 55,061.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,115.44 : 96,758.09 = 39,900.14 : x
  2. Step 2: Convert to fraction form
    70,115.44/96,758.09 = 39,900.14/x
  3. Step 3: Cross multiply
    70,115.44x = 96,758.09 × 39,900.14
  4. Step 4: Simplify right side
    70,115.44x = 3,860,660,803.47
  5. Step 5: Solve for x
    x = 3,860,660,803.47/70,115.44
  6. Step 6: Final answer
    x = 55,061.49

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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.