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Finding the Fourth Proportional to 5,223.68, 7,830.52 and 1,935.88

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Solution

The fourth proportional to 5,223.68, 7,830.52 and 1,935.88 is: 2,901.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,223.68 : 7,830.52 = 1,935.88 : x
  2. Step 2: Convert to fraction form
    5,223.68/7,830.52 = 1,935.88/x
  3. Step 3: Cross multiply
    5,223.68x = 7,830.52 × 1,935.88
  4. Step 4: Simplify right side
    5,223.68x = 15,158,947.06
  5. Step 5: Solve for x
    x = 15,158,947.06/5,223.68
  6. Step 6: Final answer
    x = 2,901.97

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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.