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Finding the Fourth Proportional to 105,553.65, 158,329.47 and 45,624.51

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Solution

The fourth proportional to 105,553.65, 158,329.47 and 45,624.51 is: 68,436.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,553.65 : 158,329.47 = 45,624.51 : x
  2. Step 2: Convert to fraction form
    105,553.65/158,329.47 = 45,624.51/x
  3. Step 3: Cross multiply
    105,553.65x = 158,329.47 × 45,624.51
  4. Step 4: Simplify right side
    105,553.65x = 7,223,704,487.31
  5. Step 5: Solve for x
    x = 7,223,704,487.31/105,553.65
  6. Step 6: Final answer
    x = 68,436.33

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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.