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Finding the Fourth Proportional to 91,798.79, 126,581.15 and 63,455.27

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Solution

The fourth proportional to 91,798.79, 126,581.15 and 63,455.27 is: 87,498.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,798.79 : 126,581.15 = 63,455.27 : x
  2. Step 2: Convert to fraction form
    91,798.79/126,581.15 = 63,455.27/x
  3. Step 3: Cross multiply
    91,798.79x = 126,581.15 × 63,455.27
  4. Step 4: Simplify right side
    91,798.79x = 8,032,240,732.88
  5. Step 5: Solve for x
    x = 8,032,240,732.88/91,798.79
  6. Step 6: Final answer
    x = 87,498.33

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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.