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Finding the Fourth Proportional to 90,525.66, 135,744.60 and 53,097.96

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Solution

The fourth proportional to 90,525.66, 135,744.60 and 53,097.96 is: 79,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,525.66 : 135,744.60 = 53,097.96 : x
  2. Step 2: Convert to fraction form
    90,525.66/135,744.60 = 53,097.96/x
  3. Step 3: Cross multiply
    90,525.66x = 135,744.60 × 53,097.96
  4. Step 4: Simplify right side
    90,525.66x = 7,207,761,341.02
  5. Step 5: Solve for x
    x = 7,207,761,341.02/90,525.66
  6. Step 6: Final answer
    x = 79,621.20

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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.