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Finding the Fourth Proportional to 188,498.92, 260,126.98 and 103,615.08

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Solution

The fourth proportional to 188,498.92, 260,126.98 and 103,615.08 is: 142,987.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,498.92 : 260,126.98 = 103,615.08 : x
  2. Step 2: Convert to fraction form
    188,498.92/260,126.98 = 103,615.08/x
  3. Step 3: Cross multiply
    188,498.92x = 260,126.98 × 103,615.08
  4. Step 4: Simplify right side
    188,498.92x = 26,953,077,842.86
  5. Step 5: Solve for x
    x = 26,953,077,842.86/188,498.92
  6. Step 6: Final answer
    x = 142,987.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.