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Finding the Fourth Proportional to 1,069.92, 1,476.42 and 604.08

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Solution

The fourth proportional to 1,069.92, 1,476.42 and 604.08 is: 833.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069.92 : 1,476.42 = 604.08 : x
  2. Step 2: Convert to fraction form
    1,069.92/1,476.42 = 604.08/x
  3. Step 3: Cross multiply
    1,069.92x = 1,476.42 × 604.08
  4. Step 4: Simplify right side
    1,069.92x = 891,875.79
  5. Step 5: Solve for x
    x = 891,875.79/1,069.92
  6. Step 6: Final answer
    x = 833.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.