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Finding the Fourth Proportional to 91,679.95, 126,554.17 and 61,454.24

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Solution

The fourth proportional to 91,679.95, 126,554.17 and 61,454.24 is: 84,830.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,679.95 : 126,554.17 = 61,454.24 : x
  2. Step 2: Convert to fraction form
    91,679.95/126,554.17 = 61,454.24/x
  3. Step 3: Cross multiply
    91,679.95x = 126,554.17 × 61,454.24
  4. Step 4: Simplify right side
    91,679.95x = 7,777,291,024.29
  5. Step 5: Solve for x
    x = 7,777,291,024.29/91,679.95
  6. Step 6: Final answer
    x = 84,830.88

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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.