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Finding the Fourth Proportional to 70,565.65, 97,380.70 and 38,300.28

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Solution

The fourth proportional to 70,565.65, 97,380.70 and 38,300.28 is: 52,854.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,565.65 : 97,380.70 = 38,300.28 : x
  2. Step 2: Convert to fraction form
    70,565.65/97,380.70 = 38,300.28/x
  3. Step 3: Cross multiply
    70,565.65x = 97,380.70 × 38,300.28
  4. Step 4: Simplify right side
    70,565.65x = 3,729,707,634.67
  5. Step 5: Solve for x
    x = 3,729,707,634.67/70,565.65
  6. Step 6: Final answer
    x = 52,854.44

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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.