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Finding the Fourth Proportional to 1,273,944.30, 1,910,916.45 and 515,784.30

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Solution

The fourth proportional to 1,273,944.30, 1,910,916.45 and 515,784.30 is: 773,676.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,944.30 : 1,910,916.45 = 515,784.30 : x
  2. Step 2: Convert to fraction form
    1,273,944.30/1,910,916.45 = 515,784.30/x
  3. Step 3: Cross multiply
    1,273,944.30x = 1,910,916.45 × 515,784.30
  4. Step 4: Simplify right side
    1,273,944.30x = 985,620,703,521.74
  5. Step 5: Solve for x
    x = 985,620,703,521.74/1,273,944.30
  6. Step 6: Final answer
    x = 773,676.45

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Double scale
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Similar ratio
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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.