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Finding the Fourth Proportional to 1,173.68, 1,751.92 and 1,035.28

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Solution

The fourth proportional to 1,173.68, 1,751.92 and 1,035.28 is: 1,545.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173.68 : 1,751.92 = 1,035.28 : x
  2. Step 2: Convert to fraction form
    1,173.68/1,751.92 = 1,035.28/x
  3. Step 3: Cross multiply
    1,173.68x = 1,751.92 × 1,035.28
  4. Step 4: Simplify right side
    1,173.68x = 1,813,727.74
  5. Step 5: Solve for x
    x = 1,813,727.74/1,173.68
  6. Step 6: Final answer
    x = 1,545.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.