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Finding the Fourth Proportional to 13,073.22, 18,041.49 and 7,407.90

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Solution

The fourth proportional to 13,073.22, 18,041.49 and 7,407.90 is: 10,223.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,073.22 : 18,041.49 = 7,407.90 : x
  2. Step 2: Convert to fraction form
    13,073.22/18,041.49 = 7,407.90/x
  3. Step 3: Cross multiply
    13,073.22x = 18,041.49 × 7,407.90
  4. Step 4: Simplify right side
    13,073.22x = 133,649,553.77
  5. Step 5: Solve for x
    x = 133,649,553.77/13,073.22
  6. Step 6: Final answer
    x = 10,223.15

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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.