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Finding the Fourth Proportional to 1,277,335.41, 1,913,834.16 and 770,832.08

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Solution

The fourth proportional to 1,277,335.41, 1,913,834.16 and 770,832.08 is: 1,154,939.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,335.41 : 1,913,834.16 = 770,832.08 : x
  2. Step 2: Convert to fraction form
    1,277,335.41/1,913,834.16 = 770,832.08/x
  3. Step 3: Cross multiply
    1,277,335.41x = 1,913,834.16 × 770,832.08
  4. Step 4: Simplify right side
    1,277,335.41x = 1,475,244,766,327.85
  5. Step 5: Solve for x
    x = 1,475,244,766,327.85/1,277,335.41
  6. Step 6: Final answer
    x = 1,154,939.22

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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.