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Finding the Fourth Proportional to 1,295.84, 1,943.92 and 474.20

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Solution

The fourth proportional to 1,295.84, 1,943.92 and 474.20 is: 711.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295.84 : 1,943.92 = 474.20 : x
  2. Step 2: Convert to fraction form
    1,295.84/1,943.92 = 474.20/x
  3. Step 3: Cross multiply
    1,295.84x = 1,943.92 × 474.20
  4. Step 4: Simplify right side
    1,295.84x = 921,806.86
  5. Step 5: Solve for x
    x = 921,806.86/1,295.84
  6. Step 6: Final answer
    x = 711.36

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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.