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Finding the Fourth Proportional to 61,687.63, 85,128.18 and 34,831.27

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Solution

The fourth proportional to 61,687.63, 85,128.18 and 34,831.27 is: 48,066.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,687.63 : 85,128.18 = 34,831.27 : x
  2. Step 2: Convert to fraction form
    61,687.63/85,128.18 = 34,831.27/x
  3. Step 3: Cross multiply
    61,687.63x = 85,128.18 × 34,831.27
  4. Step 4: Simplify right side
    61,687.63x = 2,965,122,622.19
  5. Step 5: Solve for x
    x = 2,965,122,622.19/61,687.63
  6. Step 6: Final answer
    x = 48,066.73

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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.