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Finding the Fourth Proportional to 111,661.74, 154,085.22 and 63,914.40

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Solution

The fourth proportional to 111,661.74, 154,085.22 and 63,914.40 is: 88,197.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,661.74 : 154,085.22 = 63,914.40 : x
  2. Step 2: Convert to fraction form
    111,661.74/154,085.22 = 63,914.40/x
  3. Step 3: Cross multiply
    111,661.74x = 154,085.22 × 63,914.40
  4. Step 4: Simplify right side
    111,661.74x = 9,848,264,385.17
  5. Step 5: Solve for x
    x = 9,848,264,385.17/111,661.74
  6. Step 6: Final answer
    x = 88,197.30

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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.