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Finding the Fourth Proportional to 435,885.81, 653,644.18 and 136,285.94

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Solution

The fourth proportional to 435,885.81, 653,644.18 and 136,285.94 is: 204,371.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,885.81 : 653,644.18 = 136,285.94 : x
  2. Step 2: Convert to fraction form
    435,885.81/653,644.18 = 136,285.94/x
  3. Step 3: Cross multiply
    435,885.81x = 653,644.18 × 136,285.94
  4. Step 4: Simplify right side
    435,885.81x = 89,082,513,301.30
  5. Step 5: Solve for x
    x = 89,082,513,301.30/435,885.81
  6. Step 6: Final answer
    x = 204,371.22

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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.