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Finding the Fourth Proportional to 91,999.97, 126,961.11 and 51,711.38

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Solution

The fourth proportional to 91,999.97, 126,961.11 and 51,711.38 is: 71,362.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,999.97 : 126,961.11 = 51,711.38 : x
  2. Step 2: Convert to fraction form
    91,999.97/126,961.11 = 51,711.38/x
  3. Step 3: Cross multiply
    91,999.97x = 126,961.11 × 51,711.38
  4. Step 4: Simplify right side
    91,999.97x = 6,565,333,569.63
  5. Step 5: Solve for x
    x = 6,565,333,569.63/91,999.97
  6. Step 6: Final answer
    x = 71,362.35

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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.