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Finding the Fourth Proportional to 906,137.78, 1,361,697.90 and 846,890.42

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Solution

The fourth proportional to 906,137.78, 1,361,697.90 and 846,890.42 is: 1,272,663.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,137.78 : 1,361,697.90 = 846,890.42 : x
  2. Step 2: Convert to fraction form
    906,137.78/1,361,697.90 = 846,890.42/x
  3. Step 3: Cross multiply
    906,137.78x = 1,361,697.90 × 846,890.42
  4. Step 4: Simplify right side
    906,137.78x = 1,153,208,899,635.63
  5. Step 5: Solve for x
    x = 1,153,208,899,635.63/906,137.78
  6. Step 6: Final answer
    x = 1,272,663.97

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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.