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Finding the Fourth Proportional to 78,817.88, 108,771.06 and 44,831.26

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Solution

The fourth proportional to 78,817.88, 108,771.06 and 44,831.26 is: 61,868.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,817.88 : 108,771.06 = 44,831.26 : x
  2. Step 2: Convert to fraction form
    78,817.88/108,771.06 = 44,831.26/x
  3. Step 3: Cross multiply
    78,817.88x = 108,771.06 × 44,831.26
  4. Step 4: Simplify right side
    78,817.88x = 4,876,343,671.34
  5. Step 5: Solve for x
    x = 4,876,343,671.34/78,817.88
  6. Step 6: Final answer
    x = 61,868.50

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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.