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Finding the Fourth Proportional to 14,719.26, 20,312.97 and 8,005.29

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Solution

The fourth proportional to 14,719.26, 20,312.97 and 8,005.29 is: 11,047.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,719.26 : 20,312.97 = 8,005.29 : x
  2. Step 2: Convert to fraction form
    14,719.26/20,312.97 = 8,005.29/x
  3. Step 3: Cross multiply
    14,719.26x = 20,312.97 × 8,005.29
  4. Step 4: Simplify right side
    14,719.26x = 162,611,215.61
  5. Step 5: Solve for x
    x = 162,611,215.61/14,719.26
  6. Step 6: Final answer
    x = 11,047.51

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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.