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Finding the Fourth Proportional to 68,525.80, 94,563.78 and 38,717.80

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Solution

The fourth proportional to 68,525.80, 94,563.78 and 38,717.80 is: 53,429.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,525.80 : 94,563.78 = 38,717.80 : x
  2. Step 2: Convert to fraction form
    68,525.80/94,563.78 = 38,717.80/x
  3. Step 3: Cross multiply
    68,525.80x = 94,563.78 × 38,717.80
  4. Step 4: Simplify right side
    68,525.80x = 3,661,301,521.28
  5. Step 5: Solve for x
    x = 3,661,301,521.28/68,525.80
  6. Step 6: Final answer
    x = 53,429.53

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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.