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Finding the Fourth Proportional to 9,874.74, 13,627.44 and 5,398.76

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Solution

The fourth proportional to 9,874.74, 13,627.44 and 5,398.76 is: 7,450.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,874.74 : 13,627.44 = 5,398.76 : x
  2. Step 2: Convert to fraction form
    9,874.74/13,627.44 = 5,398.76/x
  3. Step 3: Cross multiply
    9,874.74x = 13,627.44 × 5,398.76
  4. Step 4: Simplify right side
    9,874.74x = 73,571,209.84
  5. Step 5: Solve for x
    x = 73,571,209.84/9,874.74
  6. Step 6: Final answer
    x = 7,450.45

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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.