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Finding the Fourth Proportional to 13,767.96, 18,999.96 and 7,480.46

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Solution

The fourth proportional to 13,767.96, 18,999.96 and 7,480.46 is: 10,323.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,767.96 : 18,999.96 = 7,480.46 : x
  2. Step 2: Convert to fraction form
    13,767.96/18,999.96 = 7,480.46/x
  3. Step 3: Cross multiply
    13,767.96x = 18,999.96 × 7,480.46
  4. Step 4: Simplify right side
    13,767.96x = 142,128,440.78
  5. Step 5: Solve for x
    x = 142,128,440.78/13,767.96
  6. Step 6: Final answer
    x = 10,323.13

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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.