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Finding the Fourth Proportional to 3,616.74, 4,994.74 and 3,116.58

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Solution

The fourth proportional to 3,616.74, 4,994.74 and 3,116.58 is: 4,304.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,616.74 : 4,994.74 = 3,116.58 : x
  2. Step 2: Convert to fraction form
    3,616.74/4,994.74 = 3,116.58/x
  3. Step 3: Cross multiply
    3,616.74x = 4,994.74 × 3,116.58
  4. Step 4: Simplify right side
    3,616.74x = 15,566,506.79
  5. Step 5: Solve for x
    x = 15,566,506.79/3,616.74
  6. Step 6: Final answer
    x = 4,304.02

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1.5x scale

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.