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Finding the Fourth Proportional to 99,693.72, 149,572.98 and 66,548.52

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Solution

The fourth proportional to 99,693.72, 149,572.98 and 66,548.52 is: 99,844.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,693.72 : 149,572.98 = 66,548.52 : x
  2. Step 2: Convert to fraction form
    99,693.72/149,572.98 = 66,548.52/x
  3. Step 3: Cross multiply
    99,693.72x = 149,572.98 × 66,548.52
  4. Step 4: Simplify right side
    99,693.72x = 9,953,860,450.99
  5. Step 5: Solve for x
    x = 9,953,860,450.99/99,693.72
  6. Step 6: Final answer
    x = 99,844.41

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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.