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Finding the Fourth Proportional to 9,363.88, 12,899.57 and 8,015.19

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Solution

The fourth proportional to 9,363.88, 12,899.57 and 8,015.19 is: 11,041.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,363.88 : 12,899.57 = 8,015.19 : x
  2. Step 2: Convert to fraction form
    9,363.88/12,899.57 = 8,015.19/x
  3. Step 3: Cross multiply
    9,363.88x = 12,899.57 × 8,015.19
  4. Step 4: Simplify right side
    9,363.88x = 103,392,504.47
  5. Step 5: Solve for x
    x = 103,392,504.47/9,363.88
  6. Step 6: Final answer
    x = 11,041.63

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Half scale
Find fourth proportional to 18,727.76, 25,799.14 and 16,030.38
Double scale
Find fourth proportional to 9,364.88, 12,900.95 and 8,016.19
Similar ratio
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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.