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Finding the Fourth Proportional to 99,188.37, 148,594.95 and 76,892.49

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Solution

The fourth proportional to 99,188.37, 148,594.95 and 76,892.49 is: 115,193.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,188.37 : 148,594.95 = 76,892.49 : x
  2. Step 2: Convert to fraction form
    99,188.37/148,594.95 = 76,892.49/x
  3. Step 3: Cross multiply
    99,188.37x = 148,594.95 × 76,892.49
  4. Step 4: Simplify right side
    99,188.37x = 11,425,835,706.93
  5. Step 5: Solve for x
    x = 11,425,835,706.93/99,188.37
  6. Step 6: Final answer
    x = 115,193.30

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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.