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Finding the Fourth Proportional to 2,598.11, 3,897.75 and 749.09

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Solution

The fourth proportional to 2,598.11, 3,897.75 and 749.09 is: 1,123.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,598.11 : 3,897.75 = 749.09 : x
  2. Step 2: Convert to fraction form
    2,598.11/3,897.75 = 749.09/x
  3. Step 3: Cross multiply
    2,598.11x = 3,897.75 × 749.09
  4. Step 4: Simplify right side
    2,598.11x = 2,919,746.48
  5. Step 5: Solve for x
    x = 2,919,746.48/2,598.11
  6. Step 6: Final answer
    x = 1,123.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.