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Finding the Fourth Proportional to 99,266.72, 148,899.80 and 43,099.56

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Solution

The fourth proportional to 99,266.72, 148,899.80 and 43,099.56 is: 64,649.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,266.72 : 148,899.80 = 43,099.56 : x
  2. Step 2: Convert to fraction form
    99,266.72/148,899.80 = 43,099.56/x
  3. Step 3: Cross multiply
    99,266.72x = 148,899.80 × 43,099.56
  4. Step 4: Simplify right side
    99,266.72x = 6,417,515,971.84
  5. Step 5: Solve for x
    x = 6,417,515,971.84/99,266.72
  6. Step 6: Final answer
    x = 64,649.22

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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.