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Finding the Fourth Proportional to 1,691.06, 2,535.93 and 999.14

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Solution

The fourth proportional to 1,691.06, 2,535.93 and 999.14 is: 1,498.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691.06 : 2,535.93 = 999.14 : x
  2. Step 2: Convert to fraction form
    1,691.06/2,535.93 = 999.14/x
  3. Step 3: Cross multiply
    1,691.06x = 2,535.93 × 999.14
  4. Step 4: Simplify right side
    1,691.06x = 2,533,736.42
  5. Step 5: Solve for x
    x = 2,533,736.42/1,691.06
  6. Step 6: Final answer
    x = 1,498.32

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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.