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Finding the Fourth Proportional to 1,556.92, 2,333.67 and 862.03

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Solution

The fourth proportional to 1,556.92, 2,333.67 and 862.03 is: 1,292.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.92 : 2,333.67 = 862.03 : x
  2. Step 2: Convert to fraction form
    1,556.92/2,333.67 = 862.03/x
  3. Step 3: Cross multiply
    1,556.92x = 2,333.67 × 862.03
  4. Step 4: Simplify right side
    1,556.92x = 2,011,693.55
  5. Step 5: Solve for x
    x = 2,011,693.55/1,556.92
  6. Step 6: Final answer
    x = 1,292.10

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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.