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Finding the Fourth Proportional to 1,400,979.15, 2,101,468.73 and 1,400,979.15

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Solution

The fourth proportional to 1,400,979.15, 2,101,468.73 and 1,400,979.15 is: 2,101,468.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,979.15 : 2,101,468.73 = 1,400,979.15 : x
  2. Step 2: Convert to fraction form
    1,400,979.15/2,101,468.73 = 1,400,979.15/x
  3. Step 3: Cross multiply
    1,400,979.15x = 2,101,468.73 × 1,400,979.15
  4. Step 4: Simplify right side
    1,400,979.15x = 2,944,113,868,102.08
  5. Step 5: Solve for x
    x = 2,944,113,868,102.08/1,400,979.15
  6. Step 6: Final answer
    x = 2,101,468.73

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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.