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Finding the Fourth Proportional to 9,486, 13,090.92 and 5,294.16

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Solution

The fourth proportional to 9,486, 13,090.92 and 5,294.16 is: 7,306.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,486 : 13,090.92 = 5,294.16 : x
  2. Step 2: Convert to fraction form
    9,486/13,090.92 = 5,294.16/x
  3. Step 3: Cross multiply
    9,486x = 13,090.92 × 5,294.16
  4. Step 4: Simplify right side
    9,486x = 69,305,425.03
  5. Step 5: Solve for x
    x = 69,305,425.03/9,486
  6. Step 6: Final answer
    x = 7,306.07

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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.