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Finding the Fourth Proportional to 2,275.93, 3,411.35 and 959.28

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Solution

The fourth proportional to 2,275.93, 3,411.35 and 959.28 is: 1,437.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.93 : 3,411.35 = 959.28 : x
  2. Step 2: Convert to fraction form
    2,275.93/3,411.35 = 959.28/x
  3. Step 3: Cross multiply
    2,275.93x = 3,411.35 × 959.28
  4. Step 4: Simplify right side
    2,275.93x = 3,272,425.84
  5. Step 5: Solve for x
    x = 3,272,425.84/2,275.93
  6. Step 6: Final answer
    x = 1,437.84

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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.