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Finding the Fourth Proportional to 1,877,149.89, 2,816,561.97 and 865,728

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Solution

The fourth proportional to 1,877,149.89, 2,816,561.97 and 865,728 is: 1,298,978.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877,149.89 : 2,816,561.97 = 865,728 : x
  2. Step 2: Convert to fraction form
    1,877,149.89/2,816,561.97 = 865,728/x
  3. Step 3: Cross multiply
    1,877,149.89x = 2,816,561.97 × 865,728
  4. Step 4: Simplify right side
    1,877,149.89x = 2,438,376,561,164.16
  5. Step 5: Solve for x
    x = 2,438,376,561,164.16/1,877,149.89
  6. Step 6: Final answer
    x = 1,298,978.08

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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.