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Finding the Fourth Proportional to 82,954.94, 124,432.88 and 20,625.44

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Solution

The fourth proportional to 82,954.94, 124,432.88 and 20,625.44 is: 30,938.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,954.94 : 124,432.88 = 20,625.44 : x
  2. Step 2: Convert to fraction form
    82,954.94/124,432.88 = 20,625.44/x
  3. Step 3: Cross multiply
    82,954.94x = 124,432.88 × 20,625.44
  4. Step 4: Simplify right side
    82,954.94x = 2,566,482,900.47
  5. Step 5: Solve for x
    x = 2,566,482,900.47/82,954.94
  6. Step 6: Final answer
    x = 30,938.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.