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Finding the Fourth Proportional to 99,548.80, 148,891.20 and 89,094.40

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Solution

The fourth proportional to 99,548.80, 148,891.20 and 89,094.40 is: 133,254.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,548.80 : 148,891.20 = 89,094.40 : x
  2. Step 2: Convert to fraction form
    99,548.80/148,891.20 = 89,094.40/x
  3. Step 3: Cross multiply
    99,548.80x = 148,891.20 × 89,094.40
  4. Step 4: Simplify right side
    99,548.80x = 13,265,372,129.28
  5. Step 5: Solve for x
    x = 13,265,372,129.28/99,548.80
  6. Step 6: Final answer
    x = 133,254.97

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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.