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Finding the Fourth Proportional to 7,898.32, 10,900.08 and 5,241.20

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Solution

The fourth proportional to 7,898.32, 10,900.08 and 5,241.20 is: 7,233.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898.32 : 10,900.08 = 5,241.20 : x
  2. Step 2: Convert to fraction form
    7,898.32/10,900.08 = 5,241.20/x
  3. Step 3: Cross multiply
    7,898.32x = 10,900.08 × 5,241.20
  4. Step 4: Simplify right side
    7,898.32x = 57,129,499.30
  5. Step 5: Solve for x
    x = 57,129,499.30/7,898.32
  6. Step 6: Final answer
    x = 7,233.12

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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.