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Finding the Fourth Proportional to 111,693.77, 154,140.84 and 63,962.49

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Solution

The fourth proportional to 111,693.77, 154,140.84 and 63,962.49 is: 88,270.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,693.77 : 154,140.84 = 63,962.49 : x
  2. Step 2: Convert to fraction form
    111,693.77/154,140.84 = 63,962.49/x
  3. Step 3: Cross multiply
    111,693.77x = 154,140.84 × 63,962.49
  4. Step 4: Simplify right side
    111,693.77x = 9,859,231,617.28
  5. Step 5: Solve for x
    x = 9,859,231,617.28/111,693.77
  6. Step 6: Final answer
    x = 88,270.21

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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.