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Finding the Fourth Proportional to 3,892.53, 5,831.03 and 2,656.88

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Solution

The fourth proportional to 3,892.53, 5,831.03 and 2,656.88 is: 3,980.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.53 : 5,831.03 = 2,656.88 : x
  2. Step 2: Convert to fraction form
    3,892.53/5,831.03 = 2,656.88/x
  3. Step 3: Cross multiply
    3,892.53x = 5,831.03 × 2,656.88
  4. Step 4: Simplify right side
    3,892.53x = 15,492,304.55
  5. Step 5: Solve for x
    x = 15,492,304.55/3,892.53
  6. Step 6: Final answer
    x = 3,980.01

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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.