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Finding the Fourth Proportional to 1,106.20, 1,525.98 and 751.96

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Solution

The fourth proportional to 1,106.20, 1,525.98 and 751.96 is: 1,037.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,106.20 : 1,525.98 = 751.96 : x
  2. Step 2: Convert to fraction form
    1,106.20/1,525.98 = 751.96/x
  3. Step 3: Cross multiply
    1,106.20x = 1,525.98 × 751.96
  4. Step 4: Simplify right side
    1,106.20x = 1,147,475.92
  5. Step 5: Solve for x
    x = 1,147,475.92/1,106.20
  6. Step 6: Final answer
    x = 1,037.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.