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Finding the Fourth Proportional to 9,243.96, 12,755.19 and 5,265.15

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Solution

The fourth proportional to 9,243.96, 12,755.19 and 5,265.15 is: 7,265.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,243.96 : 12,755.19 = 5,265.15 : x
  2. Step 2: Convert to fraction form
    9,243.96/12,755.19 = 5,265.15/x
  3. Step 3: Cross multiply
    9,243.96x = 12,755.19 × 5,265.15
  4. Step 4: Simplify right side
    9,243.96x = 67,157,988.63
  5. Step 5: Solve for x
    x = 67,157,988.63/9,243.96
  6. Step 6: Final answer
    x = 7,265.07

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Double scale
Find fourth proportional to 9,244.96, 12,756.57 and 5,266.15
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.