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Finding the Fourth Proportional to 118,650.72, 163,756.37 and 67,663.54

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Solution

The fourth proportional to 118,650.72, 163,756.37 and 67,663.54 is: 93,386.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,650.72 : 163,756.37 = 67,663.54 : x
  2. Step 2: Convert to fraction form
    118,650.72/163,756.37 = 67,663.54/x
  3. Step 3: Cross multiply
    118,650.72x = 163,756.37 × 67,663.54
  4. Step 4: Simplify right side
    118,650.72x = 11,080,335,691.75
  5. Step 5: Solve for x
    x = 11,080,335,691.75/118,650.72
  6. Step 6: Final answer
    x = 93,386.16

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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.