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Finding the Fourth Proportional to 111,331.60, 166,851.60 and 98,792.80

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Solution

The fourth proportional to 111,331.60, 166,851.60 and 98,792.80 is: 148,059.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,331.60 : 166,851.60 = 98,792.80 : x
  2. Step 2: Convert to fraction form
    111,331.60/166,851.60 = 98,792.80/x
  3. Step 3: Cross multiply
    111,331.60x = 166,851.60 × 98,792.80
  4. Step 4: Simplify right side
    111,331.60x = 16,483,736,748.48
  5. Step 5: Solve for x
    x = 16,483,736,748.48/111,331.60
  6. Step 6: Final answer
    x = 148,059.82

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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.