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Finding the Fourth Proportional to 70,281.68, 96,989.81 and 38,451.11

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Solution

The fourth proportional to 70,281.68, 96,989.81 and 38,451.11 is: 53,063.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,281.68 : 96,989.81 = 38,451.11 : x
  2. Step 2: Convert to fraction form
    70,281.68/96,989.81 = 38,451.11/x
  3. Step 3: Cross multiply
    70,281.68x = 96,989.81 × 38,451.11
  4. Step 4: Simplify right side
    70,281.68x = 3,729,365,175.98
  5. Step 5: Solve for x
    x = 3,729,365,175.98/70,281.68
  6. Step 6: Final answer
    x = 53,063.12

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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.