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Finding the Fourth Proportional to 167,858,687.80, 251,788,031.70 and 99,666,278.20

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Solution

The fourth proportional to 167,858,687.80, 251,788,031.70 and 99,666,278.20 is: 149,499,417.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,858,687.80 : 251,788,031.70 = 99,666,278.20 : x
  2. Step 2: Convert to fraction form
    167,858,687.80/251,788,031.70 = 99,666,278.20/x
  3. Step 3: Cross multiply
    167,858,687.80x = 251,788,031.70 × 99,666,278.20
  4. Step 4: Simplify right side
    167,858,687.80x = 25,094,776,014,842,620
  5. Step 5: Solve for x
    x = 25,094,776,014,842,620/167,858,687.80
  6. Step 6: Final answer
    x = 149,499,417.30

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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.