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Finding the Fourth Proportional to 90,064.58, 134,980.02 and 36,694.49

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Solution

The fourth proportional to 90,064.58, 134,980.02 and 36,694.49 is: 54,994.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,064.58 : 134,980.02 = 36,694.49 : x
  2. Step 2: Convert to fraction form
    90,064.58/134,980.02 = 36,694.49/x
  3. Step 3: Cross multiply
    90,064.58x = 134,980.02 × 36,694.49
  4. Step 4: Simplify right side
    90,064.58x = 4,953,022,319.19
  5. Step 5: Solve for x
    x = 4,953,022,319.19/90,064.58
  6. Step 6: Final answer
    x = 54,994.12

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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.