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Finding the Fourth Proportional to 1,985,801.27, 2,978,701.83 and 1,387,930.14

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Solution

The fourth proportional to 1,985,801.27, 2,978,701.83 and 1,387,930.14 is: 2,081,895.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985,801.27 : 2,978,701.83 = 1,387,930.14 : x
  2. Step 2: Convert to fraction form
    1,985,801.27/2,978,701.83 = 1,387,930.14/x
  3. Step 3: Cross multiply
    1,985,801.27x = 2,978,701.83 × 1,387,930.14
  4. Step 4: Simplify right side
    1,985,801.27x = 4,134,230,047,930.16
  5. Step 5: Solve for x
    x = 4,134,230,047,930.16/1,985,801.27
  6. Step 6: Final answer
    x = 2,081,895.16

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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.