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Finding the Fourth Proportional to 13,363.36, 18,443.16 and 8,061.16

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Solution

The fourth proportional to 13,363.36, 18,443.16 and 8,061.16 is: 11,125.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,363.36 : 18,443.16 = 8,061.16 : x
  2. Step 2: Convert to fraction form
    13,363.36/18,443.16 = 8,061.16/x
  3. Step 3: Cross multiply
    13,363.36x = 18,443.16 × 8,061.16
  4. Step 4: Simplify right side
    13,363.36x = 148,673,263.67
  5. Step 5: Solve for x
    x = 148,673,263.67/13,363.36
  6. Step 6: Final answer
    x = 11,125.44

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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.