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Finding the Fourth Proportional to 70,248.98, 105,324.18 and 25,870.04

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Solution

The fourth proportional to 70,248.98, 105,324.18 and 25,870.04 is: 38,786.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,248.98 : 105,324.18 = 25,870.04 : x
  2. Step 2: Convert to fraction form
    70,248.98/105,324.18 = 25,870.04/x
  3. Step 3: Cross multiply
    70,248.98x = 105,324.18 × 25,870.04
  4. Step 4: Simplify right side
    70,248.98x = 2,724,740,749.57
  5. Step 5: Solve for x
    x = 2,724,740,749.57/70,248.98
  6. Step 6: Final answer
    x = 38,786.91

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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.