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Finding the Fourth Proportional to 70,686.65, 97,542.59 and 38,857.61

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Solution

The fourth proportional to 70,686.65, 97,542.59 and 38,857.61 is: 53,620.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,686.65 : 97,542.59 = 38,857.61 : x
  2. Step 2: Convert to fraction form
    70,686.65/97,542.59 = 38,857.61/x
  3. Step 3: Cross multiply
    70,686.65x = 97,542.59 × 38,857.61
  4. Step 4: Simplify right side
    70,686.65x = 3,790,271,920.61
  5. Step 5: Solve for x
    x = 3,790,271,920.61/70,686.65
  6. Step 6: Final answer
    x = 53,620.76

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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.