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Finding the Fourth Proportional to 1,112.77, 1,666.07 and 562.26

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Solution

The fourth proportional to 1,112.77, 1,666.07 and 562.26 is: 841.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.77 : 1,666.07 = 562.26 : x
  2. Step 2: Convert to fraction form
    1,112.77/1,666.07 = 562.26/x
  3. Step 3: Cross multiply
    1,112.77x = 1,666.07 × 562.26
  4. Step 4: Simplify right side
    1,112.77x = 936,764.52
  5. Step 5: Solve for x
    x = 936,764.52/1,112.77
  6. Step 6: Final answer
    x = 841.83

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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.