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Finding the Fourth Proportional to 1,277,772.60, 1,916,658.90 and 941,849.40

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Solution

The fourth proportional to 1,277,772.60, 1,916,658.90 and 941,849.40 is: 1,412,774.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,772.60 : 1,916,658.90 = 941,849.40 : x
  2. Step 2: Convert to fraction form
    1,277,772.60/1,916,658.90 = 941,849.40/x
  3. Step 3: Cross multiply
    1,277,772.60x = 1,916,658.90 × 941,849.40
  4. Step 4: Simplify right side
    1,277,772.60x = 1,805,204,034,969.66
  5. Step 5: Solve for x
    x = 1,805,204,034,969.66/1,277,772.60
  6. Step 6: Final answer
    x = 1,412,774.10

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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.