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Finding the Fourth Proportional to 97,777,978.20, 146,666,967.30 and 63,765,754.20

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Solution

The fourth proportional to 97,777,978.20, 146,666,967.30 and 63,765,754.20 is: 95,648,631.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,777,978.20 : 146,666,967.30 = 63,765,754.20 : x
  2. Step 2: Convert to fraction form
    97,777,978.20/146,666,967.30 = 63,765,754.20/x
  3. Step 3: Cross multiply
    97,777,978.20x = 146,666,967.30 × 63,765,754.20
  4. Step 4: Simplify right side
    97,777,978.20x = 9,352,329,786,111,238
  5. Step 5: Solve for x
    x = 9,352,329,786,111,238/97,777,978.20
  6. Step 6: Final answer
    x = 95,648,631.30

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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.