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Finding the Fourth Proportional to 542,974,987.80, 814,462,481.70 and 134,031,138.30

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Solution

The fourth proportional to 542,974,987.80, 814,462,481.70 and 134,031,138.30 is: 201,046,707.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,974,987.80 : 814,462,481.70 = 134,031,138.30 : x
  2. Step 2: Convert to fraction form
    542,974,987.80/814,462,481.70 = 134,031,138.30/x
  3. Step 3: Cross multiply
    542,974,987.80x = 814,462,481.70 × 134,031,138.30
  4. Step 4: Simplify right side
    542,974,987.80x = 109,163,333,524,893,920
  5. Step 5: Solve for x
    x = 109,163,333,524,893,920/542,974,987.80
  6. Step 6: Final answer
    x = 201,046,707.45

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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.