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Finding the Fourth Proportional to 1,181,912, 1,773,859.84 and 613,641.92

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Solution

The fourth proportional to 1,181,912, 1,773,859.84 and 613,641.92 is: 920,977.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181,912 : 1,773,859.84 = 613,641.92 : x
  2. Step 2: Convert to fraction form
    1,181,912/1,773,859.84 = 613,641.92/x
  3. Step 3: Cross multiply
    1,181,912x = 1,773,859.84 × 613,641.92
  4. Step 4: Simplify right side
    1,181,912x = 1,088,514,758,028.49
  5. Step 5: Solve for x
    x = 1,088,514,758,028.49/1,181,912
  6. Step 6: Final answer
    x = 920,977.84

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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.