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Finding the Fourth Proportional to 916,753.78, 1,377,372.48 and 865,768.60

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Solution

The fourth proportional to 916,753.78, 1,377,372.48 and 865,768.60 is: 1,300,770.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,753.78 : 1,377,372.48 = 865,768.60 : x
  2. Step 2: Convert to fraction form
    916,753.78/1,377,372.48 = 865,768.60/x
  3. Step 3: Cross multiply
    916,753.78x = 1,377,372.48 × 865,768.60
  4. Step 4: Simplify right side
    916,753.78x = 1,192,485,843,688.13
  5. Step 5: Solve for x
    x = 1,192,485,843,688.13/916,753.78
  6. Step 6: Final answer
    x = 1,300,770.03

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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.