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Finding the Fourth Proportional to 1,248.69, 1,874.76 and 701.22

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Solution

The fourth proportional to 1,248.69, 1,874.76 and 701.22 is: 1,052.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.69 : 1,874.76 = 701.22 : x
  2. Step 2: Convert to fraction form
    1,248.69/1,874.76 = 701.22/x
  3. Step 3: Cross multiply
    1,248.69x = 1,874.76 × 701.22
  4. Step 4: Simplify right side
    1,248.69x = 1,314,619.21
  5. Step 5: Solve for x
    x = 1,314,619.21/1,248.69
  6. Step 6: Final answer
    x = 1,052.80

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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.