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Finding the Fourth Proportional to 90,313.52, 135,470.34 and 37,694.30

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Solution

The fourth proportional to 90,313.52, 135,470.34 and 37,694.30 is: 56,541.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,313.52 : 135,470.34 = 37,694.30 : x
  2. Step 2: Convert to fraction form
    90,313.52/135,470.34 = 37,694.30/x
  3. Step 3: Cross multiply
    90,313.52x = 135,470.34 × 37,694.30
  4. Step 4: Simplify right side
    90,313.52x = 5,106,458,959.71
  5. Step 5: Solve for x
    x = 5,106,458,959.71/90,313.52
  6. Step 6: Final answer
    x = 56,541.47

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1.5x scale

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.