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Finding the Fourth Proportional to 89,788, 134,686.10 and 33,613.60

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Solution

The fourth proportional to 89,788, 134,686.10 and 33,613.60 is: 50,421.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,788 : 134,686.10 = 33,613.60 : x
  2. Step 2: Convert to fraction form
    89,788/134,686.10 = 33,613.60/x
  3. Step 3: Cross multiply
    89,788x = 134,686.10 × 33,613.60
  4. Step 4: Simplify right side
    89,788x = 4,527,284,690.96
  5. Step 5: Solve for x
    x = 4,527,284,690.96/89,788
  6. Step 6: Final answer
    x = 50,421.93

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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.