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Finding the Fourth Proportional to 1,167.03, 1,610.10 and 747.72

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Solution

The fourth proportional to 1,167.03, 1,610.10 and 747.72 is: 1,031.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167.03 : 1,610.10 = 747.72 : x
  2. Step 2: Convert to fraction form
    1,167.03/1,610.10 = 747.72/x
  3. Step 3: Cross multiply
    1,167.03x = 1,610.10 × 747.72
  4. Step 4: Simplify right side
    1,167.03x = 1,203,903.97
  5. Step 5: Solve for x
    x = 1,203,903.97/1,167.03
  6. Step 6: Final answer
    x = 1,031.60

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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.