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Finding the Fourth Proportional to 29,621.88, 40,878.46 and 16,874.87

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Solution

The fourth proportional to 29,621.88, 40,878.46 and 16,874.87 is: 23,287.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,621.88 : 40,878.46 = 16,874.87 : x
  2. Step 2: Convert to fraction form
    29,621.88/40,878.46 = 16,874.87/x
  3. Step 3: Cross multiply
    29,621.88x = 40,878.46 × 16,874.87
  4. Step 4: Simplify right side
    29,621.88x = 689,818,821.59
  5. Step 5: Solve for x
    x = 689,818,821.59/29,621.88
  6. Step 6: Final answer
    x = 23,287.48

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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.