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Finding the Fourth Proportional to 1,277,835.78, 1,916,550.36 and 424,836.66

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Solution

The fourth proportional to 1,277,835.78, 1,916,550.36 and 424,836.66 is: 637,187.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,835.78 : 1,916,550.36 = 424,836.66 : x
  2. Step 2: Convert to fraction form
    1,277,835.78/1,916,550.36 = 424,836.66/x
  3. Step 3: Cross multiply
    1,277,835.78x = 1,916,550.36 × 424,836.66
  4. Step 4: Simplify right side
    1,277,835.78x = 814,220,853,664.20
  5. Step 5: Solve for x
    x = 814,220,853,664.20/1,277,835.78
  6. Step 6: Final answer
    x = 637,187.40

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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.