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Finding the Fourth Proportional to 92,209.11, 127,302.80 and 86,894.70

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Solution

The fourth proportional to 92,209.11, 127,302.80 and 86,894.70 is: 119,965.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,209.11 : 127,302.80 = 86,894.70 : x
  2. Step 2: Convert to fraction form
    92,209.11/127,302.80 = 86,894.70/x
  3. Step 3: Cross multiply
    92,209.11x = 127,302.80 × 86,894.70
  4. Step 4: Simplify right side
    92,209.11x = 11,061,938,615.16
  5. Step 5: Solve for x
    x = 11,061,938,615.16/92,209.11
  6. Step 6: Final answer
    x = 119,965.79

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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.