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Finding the Fourth Proportional to 14,672.50, 20,247.74 and 7,957.87

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Solution

The fourth proportional to 14,672.50, 20,247.74 and 7,957.87 is: 10,981.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,672.50 : 20,247.74 = 7,957.87 : x
  2. Step 2: Convert to fraction form
    14,672.50/20,247.74 = 7,957.87/x
  3. Step 3: Cross multiply
    14,672.50x = 20,247.74 × 7,957.87
  4. Step 4: Simplify right side
    14,672.50x = 161,128,822.15
  5. Step 5: Solve for x
    x = 161,128,822.15/14,672.50
  6. Step 6: Final answer
    x = 10,981.69

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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.