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Finding the Fourth Proportional to 14,454.72, 21,699.34 and 8,614.08

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Solution

The fourth proportional to 14,454.72, 21,699.34 and 8,614.08 is: 12,931.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,454.72 : 21,699.34 = 8,614.08 : x
  2. Step 2: Convert to fraction form
    14,454.72/21,699.34 = 8,614.08/x
  3. Step 3: Cross multiply
    14,454.72x = 21,699.34 × 8,614.08
  4. Step 4: Simplify right side
    14,454.72x = 186,919,850.71
  5. Step 5: Solve for x
    x = 186,919,850.71/14,454.72
  6. Step 6: Final answer
    x = 12,931.41

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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.