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Finding the Fourth Proportional to 916, 1,264.08 and 567.04

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Solution

The fourth proportional to 916, 1,264.08 and 567.04 is: 782.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    916 : 1,264.08 = 567.04 : x
  2. Step 2: Convert to fraction form
    916/1,264.08 = 567.04/x
  3. Step 3: Cross multiply
    916x = 1,264.08 × 567.04
  4. Step 4: Simplify right side
    916x = 716,783.92
  5. Step 5: Solve for x
    x = 716,783.92/916
  6. Step 6: Final answer
    x = 782.52

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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.