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Finding the Fourth Proportional to 425,363.10, 638,143.87 and 141,032.85

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Solution

The fourth proportional to 425,363.10, 638,143.87 and 141,032.85 is: 211,582.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,363.10 : 638,143.87 = 141,032.85 : x
  2. Step 2: Convert to fraction form
    425,363.10/638,143.87 = 141,032.85/x
  3. Step 3: Cross multiply
    425,363.10x = 638,143.87 × 141,032.85
  4. Step 4: Simplify right side
    425,363.10x = 89,999,246,214.94
  5. Step 5: Solve for x
    x = 89,999,246,214.94/425,363.10
  6. Step 6: Final answer
    x = 211,582.17

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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.