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Finding the Fourth Proportional to 14,927.71, 20,600.87 and 8,213.77

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Solution

The fourth proportional to 14,927.71, 20,600.87 and 8,213.77 is: 11,335.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,927.71 : 20,600.87 = 8,213.77 : x
  2. Step 2: Convert to fraction form
    14,927.71/20,600.87 = 8,213.77/x
  3. Step 3: Cross multiply
    14,927.71x = 20,600.87 × 8,213.77
  4. Step 4: Simplify right side
    14,927.71x = 169,210,792.66
  5. Step 5: Solve for x
    x = 169,210,792.66/14,927.71
  6. Step 6: Final answer
    x = 11,335.35

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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.