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Finding the Fourth Proportional to 110,943.60, 166,415.40 and 40,813.80

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Solution

The fourth proportional to 110,943.60, 166,415.40 and 40,813.80 is: 61,220.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,943.60 : 166,415.40 = 40,813.80 : x
  2. Step 2: Convert to fraction form
    110,943.60/166,415.40 = 40,813.80/x
  3. Step 3: Cross multiply
    110,943.60x = 166,415.40 × 40,813.80
  4. Step 4: Simplify right side
    110,943.60x = 6,792,044,852.52
  5. Step 5: Solve for x
    x = 6,792,044,852.52/110,943.60
  6. Step 6: Final answer
    x = 61,220.70

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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.