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Finding the Fourth Proportional to 2,607.26, 3,911.76 and 875.88

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Solution

The fourth proportional to 2,607.26, 3,911.76 and 875.88 is: 1,314.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,607.26 : 3,911.76 = 875.88 : x
  2. Step 2: Convert to fraction form
    2,607.26/3,911.76 = 875.88/x
  3. Step 3: Cross multiply
    2,607.26x = 3,911.76 × 875.88
  4. Step 4: Simplify right side
    2,607.26x = 3,426,232.35
  5. Step 5: Solve for x
    x = 3,426,232.35/2,607.26
  6. Step 6: Final answer
    x = 1,314.11

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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.