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Finding the Fourth Proportional to 2,335.86, 3,503.66 and 874.89

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Solution

The fourth proportional to 2,335.86, 3,503.66 and 874.89 is: 1,312.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,335.86 : 3,503.66 = 874.89 : x
  2. Step 2: Convert to fraction form
    2,335.86/3,503.66 = 874.89/x
  3. Step 3: Cross multiply
    2,335.86x = 3,503.66 × 874.89
  4. Step 4: Simplify right side
    2,335.86x = 3,065,312.72
  5. Step 5: Solve for x
    x = 3,065,312.72/2,335.86
  6. Step 6: Final answer
    x = 1,312.28

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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.