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Finding the Fourth Proportional to 79,525.98, 109,700.40 and 68,343.12

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Solution

The fourth proportional to 79,525.98, 109,700.40 and 68,343.12 is: 94,274.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,525.98 : 109,700.40 = 68,343.12 : x
  2. Step 2: Convert to fraction form
    79,525.98/109,700.40 = 68,343.12/x
  3. Step 3: Cross multiply
    79,525.98x = 109,700.40 × 68,343.12
  4. Step 4: Simplify right side
    79,525.98x = 7,497,267,601.25
  5. Step 5: Solve for x
    x = 7,497,267,601.25/79,525.98
  6. Step 6: Final answer
    x = 94,274.44

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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.