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Finding the Fourth Proportional to 90,463.52, 135,599.45 and 30,434.83

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Solution

The fourth proportional to 90,463.52, 135,599.45 and 30,434.83 is: 45,620.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,463.52 : 135,599.45 = 30,434.83 : x
  2. Step 2: Convert to fraction form
    90,463.52/135,599.45 = 30,434.83/x
  3. Step 3: Cross multiply
    90,463.52x = 135,599.45 × 30,434.83
  4. Step 4: Simplify right side
    90,463.52x = 4,126,946,208.84
  5. Step 5: Solve for x
    x = 4,126,946,208.84/90,463.52
  6. Step 6: Final answer
    x = 45,620.00

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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.