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Finding the Fourth Proportional to 1,039.17, 1,434.06 and 567.06

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Solution

The fourth proportional to 1,039.17, 1,434.06 and 567.06 is: 782.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039.17 : 1,434.06 = 567.06 : x
  2. Step 2: Convert to fraction form
    1,039.17/1,434.06 = 567.06/x
  3. Step 3: Cross multiply
    1,039.17x = 1,434.06 × 567.06
  4. Step 4: Simplify right side
    1,039.17x = 813,195.94
  5. Step 5: Solve for x
    x = 813,195.94/1,039.17
  6. Step 6: Final answer
    x = 782.54

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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.