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Finding the Fourth Proportional to 111,954.14, 154,502.43 and 63,559.46

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Solution

The fourth proportional to 111,954.14, 154,502.43 and 63,559.46 is: 87,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,954.14 : 154,502.43 = 63,559.46 : x
  2. Step 2: Convert to fraction form
    111,954.14/154,502.43 = 63,559.46/x
  3. Step 3: Cross multiply
    111,954.14x = 154,502.43 × 63,559.46
  4. Step 4: Simplify right side
    111,954.14x = 9,820,091,019.49
  5. Step 5: Solve for x
    x = 9,820,091,019.49/111,954.14
  6. Step 6: Final answer
    x = 87,715.30

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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.