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Finding the Fourth Proportional to 14,758.72, 20,368.16 and 8,473.12

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Solution

The fourth proportional to 14,758.72, 20,368.16 and 8,473.12 is: 11,693.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,758.72 : 20,368.16 = 8,473.12 : x
  2. Step 2: Convert to fraction form
    14,758.72/20,368.16 = 8,473.12/x
  3. Step 3: Cross multiply
    14,758.72x = 20,368.16 × 8,473.12
  4. Step 4: Simplify right side
    14,758.72x = 172,581,863.86
  5. Step 5: Solve for x
    x = 172,581,863.86/14,758.72
  6. Step 6: Final answer
    x = 11,693.55

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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.