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Finding the Fourth Proportional to 21,714.66, 32,565.08 and 6,920.12

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Solution

The fourth proportional to 21,714.66, 32,565.08 and 6,920.12 is: 10,377.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,714.66 : 32,565.08 = 6,920.12 : x
  2. Step 2: Convert to fraction form
    21,714.66/32,565.08 = 6,920.12/x
  3. Step 3: Cross multiply
    21,714.66x = 32,565.08 × 6,920.12
  4. Step 4: Simplify right side
    21,714.66x = 225,354,265.67
  5. Step 5: Solve for x
    x = 225,354,265.67/21,714.66
  6. Step 6: Final answer
    x = 10,377.98

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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.