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Finding the Fourth Proportional to 1,132.16, 1,696.80 and 482.24

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Solution

The fourth proportional to 1,132.16, 1,696.80 and 482.24 is: 722.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.16 : 1,696.80 = 482.24 : x
  2. Step 2: Convert to fraction form
    1,132.16/1,696.80 = 482.24/x
  3. Step 3: Cross multiply
    1,132.16x = 1,696.80 × 482.24
  4. Step 4: Simplify right side
    1,132.16x = 818,264.83
  5. Step 5: Solve for x
    x = 818,264.83/1,132.16
  6. Step 6: Final answer
    x = 722.75

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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.