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Finding the Fourth Proportional to 19,933,205.20, 27,982,070 and 19,933,205.20

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Solution

The fourth proportional to 19,933,205.20, 27,982,070 and 19,933,205.20 is: 27,982,070

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,933,205.20 : 27,982,070 = 19,933,205.20 : x
  2. Step 2: Convert to fraction form
    19,933,205.20/27,982,070 = 19,933,205.20/x
  3. Step 3: Cross multiply
    19,933,205.20x = 27,982,070 × 19,933,205.20
  4. Step 4: Simplify right side
    19,933,205.20x = 557,772,343,230,764
  5. Step 5: Solve for x
    x = 557,772,343,230,764/19,933,205.20
  6. Step 6: Final answer
    x = 27,982,070

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.