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Finding the Fourth Proportional to 7,153.54, 9,873.03 and 4,171.12

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Solution

The fourth proportional to 7,153.54, 9,873.03 and 4,171.12 is: 5,756.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.54 : 9,873.03 = 4,171.12 : x
  2. Step 2: Convert to fraction form
    7,153.54/9,873.03 = 4,171.12/x
  3. Step 3: Cross multiply
    7,153.54x = 9,873.03 × 4,171.12
  4. Step 4: Simplify right side
    7,153.54x = 41,181,592.89
  5. Step 5: Solve for x
    x = 41,181,592.89/7,153.54
  6. Step 6: Final answer
    x = 5,756.81

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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.