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Finding the Fourth Proportional to 2,607.03, 3,909.74 and 875.25

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Solution

The fourth proportional to 2,607.03, 3,909.74 and 875.25 is: 1,312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,607.03 : 3,909.74 = 875.25 : x
  2. Step 2: Convert to fraction form
    2,607.03/3,909.74 = 875.25/x
  3. Step 3: Cross multiply
    2,607.03x = 3,909.74 × 875.25
  4. Step 4: Simplify right side
    2,607.03x = 3,421,995.56
  5. Step 5: Solve for x
    x = 3,421,995.56/2,607.03
  6. Step 6: Final answer
    x = 1,312.60

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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.