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Finding the Fourth Proportional to 99,898.50, 149,921.70 and 47,308.11

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Solution

The fourth proportional to 99,898.50, 149,921.70 and 47,308.11 is: 70,997.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,898.50 : 149,921.70 = 47,308.11 : x
  2. Step 2: Convert to fraction form
    99,898.50/149,921.70 = 47,308.11/x
  3. Step 3: Cross multiply
    99,898.50x = 149,921.70 × 47,308.11
  4. Step 4: Simplify right side
    99,898.50x = 7,092,512,274.99
  5. Step 5: Solve for x
    x = 7,092,512,274.99/99,898.50
  6. Step 6: Final answer
    x = 70,997.18

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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.