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Finding the Fourth Proportional to 9,708.56, 13,398.36 and 7,346.60

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Solution

The fourth proportional to 9,708.56, 13,398.36 and 7,346.60 is: 10,138.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,708.56 : 13,398.36 = 7,346.60 : x
  2. Step 2: Convert to fraction form
    9,708.56/13,398.36 = 7,346.60/x
  3. Step 3: Cross multiply
    9,708.56x = 13,398.36 × 7,346.60
  4. Step 4: Simplify right side
    9,708.56x = 98,432,391.58
  5. Step 5: Solve for x
    x = 98,432,391.58/9,708.56
  6. Step 6: Final answer
    x = 10,138.72

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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.