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Finding the Fourth Proportional to 111,973.92, 154,544.16 and 64,243.08

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Solution

The fourth proportional to 111,973.92, 154,544.16 and 64,243.08 is: 88,667.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,973.92 : 154,544.16 = 64,243.08 : x
  2. Step 2: Convert to fraction form
    111,973.92/154,544.16 = 64,243.08/x
  3. Step 3: Cross multiply
    111,973.92x = 154,544.16 × 64,243.08
  4. Step 4: Simplify right side
    111,973.92x = 9,928,392,834.41
  5. Step 5: Solve for x
    x = 9,928,392,834.41/111,973.92
  6. Step 6: Final answer
    x = 88,667.01

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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.