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Finding the Fourth Proportional to 405,776.28, 608,719.71 and 169,063.50

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Solution

The fourth proportional to 405,776.28, 608,719.71 and 169,063.50 is: 253,618.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,776.28 : 608,719.71 = 169,063.50 : x
  2. Step 2: Convert to fraction form
    405,776.28/608,719.71 = 169,063.50/x
  3. Step 3: Cross multiply
    405,776.28x = 608,719.71 × 169,063.50
  4. Step 4: Simplify right side
    405,776.28x = 102,912,284,691.59
  5. Step 5: Solve for x
    x = 102,912,284,691.59/405,776.28
  6. Step 6: Final answer
    x = 253,618.29

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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.