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Finding the Fourth Proportional to 14,652.92, 20,221.08 and 7,938.53

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Solution

The fourth proportional to 14,652.92, 20,221.08 and 7,938.53 is: 10,955.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,652.92 : 20,221.08 = 7,938.53 : x
  2. Step 2: Convert to fraction form
    14,652.92/20,221.08 = 7,938.53/x
  3. Step 3: Cross multiply
    14,652.92x = 20,221.08 × 7,938.53
  4. Step 4: Simplify right side
    14,652.92x = 160,525,650.21
  5. Step 5: Solve for x
    x = 160,525,650.21/14,652.92
  6. Step 6: Final answer
    x = 10,955.20

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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.