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Finding the Fourth Proportional to 1,036,769.61, 1,554,921.13 and 371,921.61

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Solution

The fourth proportional to 1,036,769.61, 1,554,921.13 and 371,921.61 is: 557,798.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036,769.61 : 1,554,921.13 = 371,921.61 : x
  2. Step 2: Convert to fraction form
    1,036,769.61/1,554,921.13 = 371,921.61/x
  3. Step 3: Cross multiply
    1,036,769.61x = 1,554,921.13 × 371,921.61
  4. Step 4: Simplify right side
    1,036,769.61x = 578,308,770,092.62
  5. Step 5: Solve for x
    x = 578,308,770,092.62/1,036,769.61
  6. Step 6: Final answer
    x = 557,798.73

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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.