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Finding the Fourth Proportional to 70,351.65, 105,489.19 and 25,366.88

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Solution

The fourth proportional to 70,351.65, 105,489.19 and 25,366.88 is: 38,036.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,351.65 : 105,489.19 = 25,366.88 : x
  2. Step 2: Convert to fraction form
    70,351.65/105,489.19 = 25,366.88/x
  3. Step 3: Cross multiply
    70,351.65x = 105,489.19 × 25,366.88
  4. Step 4: Simplify right side
    70,351.65x = 2,675,931,624.03
  5. Step 5: Solve for x
    x = 2,675,931,624.03/70,351.65
  6. Step 6: Final answer
    x = 38,036.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.