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Finding the Fourth Proportional to 2,335.71, 3,504.63 and 874.98

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Solution

The fourth proportional to 2,335.71, 3,504.63 and 874.98 is: 1,312.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,335.71 : 3,504.63 = 874.98 : x
  2. Step 2: Convert to fraction form
    2,335.71/3,504.63 = 874.98/x
  3. Step 3: Cross multiply
    2,335.71x = 3,504.63 × 874.98
  4. Step 4: Simplify right side
    2,335.71x = 3,066,481.16
  5. Step 5: Solve for x
    x = 3,066,481.16/2,335.71
  6. Step 6: Final answer
    x = 1,312.87

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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.