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Finding the Fourth Proportional to 99,063.80, 148,509.30 and 59,636.60

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Solution

The fourth proportional to 99,063.80, 148,509.30 and 59,636.60 is: 89,402.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,063.80 : 148,509.30 = 59,636.60 : x
  2. Step 2: Convert to fraction form
    99,063.80/148,509.30 = 59,636.60/x
  3. Step 3: Cross multiply
    99,063.80x = 148,509.30 × 59,636.60
  4. Step 4: Simplify right side
    99,063.80x = 8,856,589,720.38
  5. Step 5: Solve for x
    x = 8,856,589,720.38/99,063.80
  6. Step 6: Final answer
    x = 89,402.89

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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.