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Finding the Fourth Proportional to 1,567.62, 2,353.80 and 986.24

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Solution

The fourth proportional to 1,567.62, 2,353.80 and 986.24 is: 1,480.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,567.62 : 2,353.80 = 986.24 : x
  2. Step 2: Convert to fraction form
    1,567.62/2,353.80 = 986.24/x
  3. Step 3: Cross multiply
    1,567.62x = 2,353.80 × 986.24
  4. Step 4: Simplify right side
    1,567.62x = 2,321,411.71
  5. Step 5: Solve for x
    x = 2,321,411.71/1,567.62
  6. Step 6: Final answer
    x = 1,480.85

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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.