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Finding the Fourth Proportional to 99,305.20, 148,860.60 and 88,807.60

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Solution

The fourth proportional to 99,305.20, 148,860.60 and 88,807.60 is: 133,124.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,305.20 : 148,860.60 = 88,807.60 : x
  2. Step 2: Convert to fraction form
    99,305.20/148,860.60 = 88,807.60/x
  3. Step 3: Cross multiply
    99,305.20x = 148,860.60 × 88,807.60
  4. Step 4: Simplify right side
    99,305.20x = 13,219,952,620.56
  5. Step 5: Solve for x
    x = 13,219,952,620.56/99,305.20
  6. Step 6: Final answer
    x = 133,124.48

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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.