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Finding the Fourth Proportional to 2,349.68, 3,523.82 and 705.78

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Solution

The fourth proportional to 2,349.68, 3,523.82 and 705.78 is: 1,058.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,349.68 : 3,523.82 = 705.78 : x
  2. Step 2: Convert to fraction form
    2,349.68/3,523.82 = 705.78/x
  3. Step 3: Cross multiply
    2,349.68x = 3,523.82 × 705.78
  4. Step 4: Simplify right side
    2,349.68x = 2,487,038.15
  5. Step 5: Solve for x
    x = 2,487,038.15/2,349.68
  6. Step 6: Final answer
    x = 1,058.46

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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.