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Finding the Fourth Proportional to 9,237.81, 12,747.72 and 5,258.55

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Solution

The fourth proportional to 9,237.81, 12,747.72 and 5,258.55 is: 7,256.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,237.81 : 12,747.72 = 5,258.55 : x
  2. Step 2: Convert to fraction form
    9,237.81/12,747.72 = 5,258.55/x
  3. Step 3: Cross multiply
    9,237.81x = 12,747.72 × 5,258.55
  4. Step 4: Simplify right side
    9,237.81x = 67,034,523.01
  5. Step 5: Solve for x
    x = 67,034,523.01/9,237.81
  6. Step 6: Final answer
    x = 7,256.54

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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.