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Finding the Fourth Proportional to 14,703.96, 20,290.14 and 8,416.92

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Solution

The fourth proportional to 14,703.96, 20,290.14 and 8,416.92 is: 11,614.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,703.96 : 20,290.14 = 8,416.92 : x
  2. Step 2: Convert to fraction form
    14,703.96/20,290.14 = 8,416.92/x
  3. Step 3: Cross multiply
    14,703.96x = 20,290.14 × 8,416.92
  4. Step 4: Simplify right side
    14,703.96x = 170,780,485.17
  5. Step 5: Solve for x
    x = 170,780,485.17/14,703.96
  6. Step 6: Final answer
    x = 11,614.59

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Double scale
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Similar ratio
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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.