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Finding the Fourth Proportional to 1,342.29, 2,011.59 and 726.33

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Solution

The fourth proportional to 1,342.29, 2,011.59 and 726.33 is: 1,088.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.29 : 2,011.59 = 726.33 : x
  2. Step 2: Convert to fraction form
    1,342.29/2,011.59 = 726.33/x
  3. Step 3: Cross multiply
    1,342.29x = 2,011.59 × 726.33
  4. Step 4: Simplify right side
    1,342.29x = 1,461,078.16
  5. Step 5: Solve for x
    x = 1,461,078.16/1,342.29
  6. Step 6: Final answer
    x = 1,088.50

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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.