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Finding the Fourth Proportional to 1,695.33, 2,542.08 and 916.26

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Solution

The fourth proportional to 1,695.33, 2,542.08 and 916.26 is: 1,373.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.33 : 2,542.08 = 916.26 : x
  2. Step 2: Convert to fraction form
    1,695.33/2,542.08 = 916.26/x
  3. Step 3: Cross multiply
    1,695.33x = 2,542.08 × 916.26
  4. Step 4: Simplify right side
    1,695.33x = 2,329,206.22
  5. Step 5: Solve for x
    x = 2,329,206.22/1,695.33
  6. Step 6: Final answer
    x = 1,373.90

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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.