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Finding the Fourth Proportional to 71,662.95, 98,894.39 and 39,833.73

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Solution

The fourth proportional to 71,662.95, 98,894.39 and 39,833.73 is: 54,970.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,662.95 : 98,894.39 = 39,833.73 : x
  2. Step 2: Convert to fraction form
    71,662.95/98,894.39 = 39,833.73/x
  3. Step 3: Cross multiply
    71,662.95x = 98,894.39 × 39,833.73
  4. Step 4: Simplify right side
    71,662.95x = 3,939,332,230.61
  5. Step 5: Solve for x
    x = 3,939,332,230.61/71,662.95
  6. Step 6: Final answer
    x = 54,970.28

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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.