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Finding the Fourth Proportional to 70,651.68, 97,499.61 and 38,821.20

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Solution

The fourth proportional to 70,651.68, 97,499.61 and 38,821.20 is: 53,573.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,651.68 : 97,499.61 = 38,821.20 : x
  2. Step 2: Convert to fraction form
    70,651.68/97,499.61 = 38,821.20/x
  3. Step 3: Cross multiply
    70,651.68x = 97,499.61 × 38,821.20
  4. Step 4: Simplify right side
    70,651.68x = 3,785,051,859.73
  5. Step 5: Solve for x
    x = 3,785,051,859.73/70,651.68
  6. Step 6: Final answer
    x = 53,573.42

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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.