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Finding the Fourth Proportional to 67,220.66, 92,754.22 and 38,920.88

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Solution

The fourth proportional to 67,220.66, 92,754.22 and 38,920.88 is: 53,704.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,220.66 : 92,754.22 = 38,920.88 : x
  2. Step 2: Convert to fraction form
    67,220.66/92,754.22 = 38,920.88/x
  3. Step 3: Cross multiply
    67,220.66x = 92,754.22 × 38,920.88
  4. Step 4: Simplify right side
    67,220.66x = 3,610,075,866.11
  5. Step 5: Solve for x
    x = 3,610,075,866.11/67,220.66
  6. Step 6: Final answer
    x = 53,704.86

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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.