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Finding the Fourth Proportional to 98,590.98, 136,167.78 and 66,269.49

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Solution

The fourth proportional to 98,590.98, 136,167.78 and 66,269.49 is: 91,527.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,590.98 : 136,167.78 = 66,269.49 : x
  2. Step 2: Convert to fraction form
    98,590.98/136,167.78 = 66,269.49/x
  3. Step 3: Cross multiply
    98,590.98x = 136,167.78 × 66,269.49
  4. Step 4: Simplify right side
    98,590.98x = 9,023,769,335.03
  5. Step 5: Solve for x
    x = 9,023,769,335.03/98,590.98
  6. Step 6: Final answer
    x = 91,527.33

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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.