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Finding the Fourth Proportional to 14,878.92, 20,531.16 and 8,828.22

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Solution

The fourth proportional to 14,878.92, 20,531.16 and 8,828.22 is: 12,181.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,878.92 : 20,531.16 = 8,828.22 : x
  2. Step 2: Convert to fraction form
    14,878.92/20,531.16 = 8,828.22/x
  3. Step 3: Cross multiply
    14,878.92x = 20,531.16 × 8,828.22
  4. Step 4: Simplify right side
    14,878.92x = 181,253,597.34
  5. Step 5: Solve for x
    x = 181,253,597.34/14,878.92
  6. Step 6: Final answer
    x = 12,181.91

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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.