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Finding the Fourth Proportional to 16,686.80, 25,030.20 and 6,297.20

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Solution

The fourth proportional to 16,686.80, 25,030.20 and 6,297.20 is: 9,445.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,686.80 : 25,030.20 = 6,297.20 : x
  2. Step 2: Convert to fraction form
    16,686.80/25,030.20 = 6,297.20/x
  3. Step 3: Cross multiply
    16,686.80x = 25,030.20 × 6,297.20
  4. Step 4: Simplify right side
    16,686.80x = 157,620,175.44
  5. Step 5: Solve for x
    x = 157,620,175.44/16,686.80
  6. Step 6: Final answer
    x = 9,445.80

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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.