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Finding the Fourth Proportional to 2,077.66, 3,116.64 and 616.93

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Solution

The fourth proportional to 2,077.66, 3,116.64 and 616.93 is: 925.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.66 : 3,116.64 = 616.93 : x
  2. Step 2: Convert to fraction form
    2,077.66/3,116.64 = 616.93/x
  3. Step 3: Cross multiply
    2,077.66x = 3,116.64 × 616.93
  4. Step 4: Simplify right side
    2,077.66x = 1,922,740.92
  5. Step 5: Solve for x
    x = 1,922,740.92/2,077.66
  6. Step 6: Final answer
    x = 925.44

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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.