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Finding the Fourth Proportional to 10,661.54, 14,718.95 and 7,393.19

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Solution

The fourth proportional to 10,661.54, 14,718.95 and 7,393.19 is: 10,206.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,661.54 : 14,718.95 = 7,393.19 : x
  2. Step 2: Convert to fraction form
    10,661.54/14,718.95 = 7,393.19/x
  3. Step 3: Cross multiply
    10,661.54x = 14,718.95 × 7,393.19
  4. Step 4: Simplify right side
    10,661.54x = 108,819,993.78
  5. Step 5: Solve for x
    x = 108,819,993.78/10,661.54
  6. Step 6: Final answer
    x = 10,206.78

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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.