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Finding the Fourth Proportional to 238,987.68, 358,398.89 and 105,960.97

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Solution

The fourth proportional to 238,987.68, 358,398.89 and 105,960.97 is: 158,904.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,987.68 : 358,398.89 = 105,960.97 : x
  2. Step 2: Convert to fraction form
    238,987.68/358,398.89 = 105,960.97/x
  3. Step 3: Cross multiply
    238,987.68x = 358,398.89 × 105,960.97
  4. Step 4: Simplify right side
    238,987.68x = 37,976,294,031.32
  5. Step 5: Solve for x
    x = 37,976,294,031.32/238,987.68
  6. Step 6: Final answer
    x = 158,904.82

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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.