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Finding the Fourth Proportional to 121,793.49, 168,077.43 and 67,345.70

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Solution

The fourth proportional to 121,793.49, 168,077.43 and 67,345.70 is: 92,938.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,793.49 : 168,077.43 = 67,345.70 : x
  2. Step 2: Convert to fraction form
    121,793.49/168,077.43 = 67,345.70/x
  3. Step 3: Cross multiply
    121,793.49x = 168,077.43 × 67,345.70
  4. Step 4: Simplify right side
    121,793.49x = 11,319,291,337.16
  5. Step 5: Solve for x
    x = 11,319,291,337.16/121,793.49
  6. Step 6: Final answer
    x = 92,938.39

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1.5x scale

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.