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Finding the Fourth Proportional to 20,653.62, 28,483.65 and 17,481.66

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Solution

The fourth proportional to 20,653.62, 28,483.65 and 17,481.66 is: 24,109.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.62 : 28,483.65 = 17,481.66 : x
  2. Step 2: Convert to fraction form
    20,653.62/28,483.65 = 17,481.66/x
  3. Step 3: Cross multiply
    20,653.62x = 28,483.65 × 17,481.66
  4. Step 4: Simplify right side
    20,653.62x = 497,941,484.86
  5. Step 5: Solve for x
    x = 497,941,484.86/20,653.62
  6. Step 6: Final answer
    x = 24,109.16

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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.