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Finding the Fourth Proportional to 1,877,067.83, 2,815,601.69 and 865,890.60

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Solution

The fourth proportional to 1,877,067.83, 2,815,601.69 and 865,890.60 is: 1,298,835.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877,067.83 : 2,815,601.69 = 865,890.60 : x
  2. Step 2: Convert to fraction form
    1,877,067.83/2,815,601.69 = 865,890.60/x
  3. Step 3: Cross multiply
    1,877,067.83x = 2,815,601.69 × 865,890.60
  4. Step 4: Simplify right side
    1,877,067.83x = 2,438,003,032,385.66
  5. Step 5: Solve for x
    x = 2,438,003,032,385.66/1,877,067.83
  6. Step 6: Final answer
    x = 1,298,835.88

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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.