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Finding the Fourth Proportional to 99,794,739.20, 149,692,108.80 and 48,709,529.60

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Solution

The fourth proportional to 99,794,739.20, 149,692,108.80 and 48,709,529.60 is: 73,064,294.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,794,739.20 : 149,692,108.80 = 48,709,529.60 : x
  2. Step 2: Convert to fraction form
    99,794,739.20/149,692,108.80 = 48,709,529.60/x
  3. Step 3: Cross multiply
    99,794,739.20x = 149,692,108.80 × 48,709,529.60
  4. Step 4: Simplify right side
    99,794,739.20x = 7,291,432,204,480,021
  5. Step 5: Solve for x
    x = 7,291,432,204,480,021/99,794,739.20
  6. Step 6: Final answer
    x = 73,064,294.40

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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.