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Finding the Fourth Proportional to 238,966.65, 358,449.98 and 132,678.45

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Solution

The fourth proportional to 238,966.65, 358,449.98 and 132,678.45 is: 199,017.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,966.65 : 358,449.98 = 132,678.45 : x
  2. Step 2: Convert to fraction form
    238,966.65/358,449.98 = 132,678.45/x
  3. Step 3: Cross multiply
    238,966.65x = 358,449.98 × 132,678.45
  4. Step 4: Simplify right side
    238,966.65x = 47,558,587,085.54
  5. Step 5: Solve for x
    x = 47,558,587,085.54/238,966.65
  6. Step 6: Final answer
    x = 199,017.68

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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.