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Finding the Fourth Proportional to 238,648.65, 357,972.83 and 70,170.38

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Solution

The fourth proportional to 238,648.65, 357,972.83 and 70,170.38 is: 105,255.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,648.65 : 357,972.83 = 70,170.38 : x
  2. Step 2: Convert to fraction form
    238,648.65/357,972.83 = 70,170.38/x
  3. Step 3: Cross multiply
    238,648.65x = 357,972.83 × 70,170.38
  4. Step 4: Simplify right side
    238,648.65x = 25,119,087,720.91
  5. Step 5: Solve for x
    x = 25,119,087,720.91/238,648.65
  6. Step 6: Final answer
    x = 105,255.52

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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.