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Finding the Fourth Proportional to 519,696.72, 779,484.60 and 140,599.44

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Solution

The fourth proportional to 519,696.72, 779,484.60 and 140,599.44 is: 210,882.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,696.72 : 779,484.60 = 140,599.44 : x
  2. Step 2: Convert to fraction form
    519,696.72/779,484.60 = 140,599.44/x
  3. Step 3: Cross multiply
    519,696.72x = 779,484.60 × 140,599.44
  4. Step 4: Simplify right side
    519,696.72x = 109,595,098,248.62
  5. Step 5: Solve for x
    x = 109,595,098,248.62/519,696.72
  6. Step 6: Final answer
    x = 210,882.80

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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.