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Finding the Fourth Proportional to 91,266, 126,004.85 and 62,633.58

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Solution

The fourth proportional to 91,266, 126,004.85 and 62,633.58 is: 86,473.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,266 : 126,004.85 = 62,633.58 : x
  2. Step 2: Convert to fraction form
    91,266/126,004.85 = 62,633.58/x
  3. Step 3: Cross multiply
    91,266x = 126,004.85 × 62,633.58
  4. Step 4: Simplify right side
    91,266x = 7,892,134,852.86
  5. Step 5: Solve for x
    x = 7,892,134,852.86/91,266
  6. Step 6: Final answer
    x = 86,473.99

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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.