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Finding the Fourth Proportional to 436,139.81, 653,941.80 and 169,589.62

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Solution

The fourth proportional to 436,139.81, 653,941.80 and 169,589.62 is: 254,280.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,139.81 : 653,941.80 = 169,589.62 : x
  2. Step 2: Convert to fraction form
    436,139.81/653,941.80 = 169,589.62/x
  3. Step 3: Cross multiply
    436,139.81x = 653,941.80 × 169,589.62
  4. Step 4: Simplify right side
    436,139.81x = 110,901,740,516.17
  5. Step 5: Solve for x
    x = 110,901,740,516.17/436,139.81
  6. Step 6: Final answer
    x = 254,280.25

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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.