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Finding the Fourth Proportional to 10,393.46, 15,660.34 and 8,585.09

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Solution

The fourth proportional to 10,393.46, 15,660.34 and 8,585.09 is: 12,935.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,393.46 : 15,660.34 = 8,585.09 : x
  2. Step 2: Convert to fraction form
    10,393.46/15,660.34 = 8,585.09/x
  3. Step 3: Cross multiply
    10,393.46x = 15,660.34 × 8,585.09
  4. Step 4: Simplify right side
    10,393.46x = 134,445,428.33
  5. Step 5: Solve for x
    x = 134,445,428.33/10,393.46
  6. Step 6: Final answer
    x = 12,935.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.