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Finding the Fourth Proportional to 1,292,682.38, 1,783,913.98 and 719,734.85

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Solution

The fourth proportional to 1,292,682.38, 1,783,913.98 and 719,734.85 is: 993,240.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,682.38 : 1,783,913.98 = 719,734.85 : x
  2. Step 2: Convert to fraction form
    1,292,682.38/1,783,913.98 = 719,734.85/x
  3. Step 3: Cross multiply
    1,292,682.38x = 1,783,913.98 × 719,734.85
  4. Step 4: Simplify right side
    1,292,682.38x = 1,283,945,058,128.48
  5. Step 5: Solve for x
    x = 1,283,945,058,128.48/1,292,682.38
  6. Step 6: Final answer
    x = 993,240.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.