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Finding the Fourth Proportional to 118,354.47, 163,330.21 and 67,370.48

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Solution

The fourth proportional to 118,354.47, 163,330.21 and 67,370.48 is: 92,971.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,354.47 : 163,330.21 = 67,370.48 : x
  2. Step 2: Convert to fraction form
    118,354.47/163,330.21 = 67,370.48/x
  3. Step 3: Cross multiply
    118,354.47x = 163,330.21 × 67,370.48
  4. Step 4: Simplify right side
    118,354.47x = 11,003,634,646.20
  5. Step 5: Solve for x
    x = 11,003,634,646.20/118,354.47
  6. Step 6: Final answer
    x = 92,971.86

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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.