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Finding the Fourth Proportional to 13,365.43, 18,444.96 and 8,061.94

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Solution

The fourth proportional to 13,365.43, 18,444.96 and 8,061.94 is: 11,125.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,365.43 : 18,444.96 = 8,061.94 : x
  2. Step 2: Convert to fraction form
    13,365.43/18,444.96 = 8,061.94/x
  3. Step 3: Cross multiply
    13,365.43x = 18,444.96 × 8,061.94
  4. Step 4: Simplify right side
    13,365.43x = 148,702,160.82
  5. Step 5: Solve for x
    x = 148,702,160.82/13,365.43
  6. Step 6: Final answer
    x = 11,125.88

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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.