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Finding the Fourth Proportional to 1,026.66, 1,536.65 and 752.69

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Solution

The fourth proportional to 1,026.66, 1,536.65 and 752.69 is: 1,126.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.66 : 1,536.65 = 752.69 : x
  2. Step 2: Convert to fraction form
    1,026.66/1,536.65 = 752.69/x
  3. Step 3: Cross multiply
    1,026.66x = 1,536.65 × 752.69
  4. Step 4: Simplify right side
    1,026.66x = 1,156,609.64
  5. Step 5: Solve for x
    x = 1,156,609.64/1,026.66
  6. Step 6: Final answer
    x = 1,126.58

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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.