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Finding the Fourth Proportional to 1,518.12, 2,095.86 and 929

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Solution

The fourth proportional to 1,518.12, 2,095.86 and 929 is: 1,282.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.12 : 2,095.86 = 929 : x
  2. Step 2: Convert to fraction form
    1,518.12/2,095.86 = 929/x
  3. Step 3: Cross multiply
    1,518.12x = 2,095.86 × 929
  4. Step 4: Simplify right side
    1,518.12x = 1,947,053.94
  5. Step 5: Solve for x
    x = 1,947,053.94/1,518.12
  6. Step 6: Final answer
    x = 1,282.54

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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.