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Finding the Fourth Proportional to 1,167.66, 1,613.69 and 957.51

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Solution

The fourth proportional to 1,167.66, 1,613.69 and 957.51 is: 1,323.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167.66 : 1,613.69 = 957.51 : x
  2. Step 2: Convert to fraction form
    1,167.66/1,613.69 = 957.51/x
  3. Step 3: Cross multiply
    1,167.66x = 1,613.69 × 957.51
  4. Step 4: Simplify right side
    1,167.66x = 1,545,124.31
  5. Step 5: Solve for x
    x = 1,545,124.31/1,167.66
  6. Step 6: Final answer
    x = 1,323.27

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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.