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Finding the Fourth Proportional to 106,425.01, 159,529.71 and 69,008.81

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Solution

The fourth proportional to 106,425.01, 159,529.71 and 69,008.81 is: 103,443.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,425.01 : 159,529.71 = 69,008.81 : x
  2. Step 2: Convert to fraction form
    106,425.01/159,529.71 = 69,008.81/x
  3. Step 3: Cross multiply
    106,425.01x = 159,529.71 × 69,008.81
  4. Step 4: Simplify right side
    106,425.01x = 11,008,955,446.75
  5. Step 5: Solve for x
    x = 11,008,955,446.75/106,425.01
  6. Step 6: Final answer
    x = 103,443.31

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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.