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Finding the Fourth Proportional to 435,763.11, 653,682.31 and 120,220.01

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Solution

The fourth proportional to 435,763.11, 653,682.31 and 120,220.01 is: 180,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,763.11 : 653,682.31 = 120,220.01 : x
  2. Step 2: Convert to fraction form
    435,763.11/653,682.31 = 120,220.01/x
  3. Step 3: Cross multiply
    435,763.11x = 653,682.31 × 120,220.01
  4. Step 4: Simplify right side
    435,763.11x = 78,585,693,845.02
  5. Step 5: Solve for x
    x = 78,585,693,845.02/435,763.11
  6. Step 6: Final answer
    x = 180,340.40

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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.