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Finding the Fourth Proportional to 42,475.44, 63,713.16 and 11,313.84

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Solution

The fourth proportional to 42,475.44, 63,713.16 and 11,313.84 is: 16,970.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,475.44 : 63,713.16 = 11,313.84 : x
  2. Step 2: Convert to fraction form
    42,475.44/63,713.16 = 11,313.84/x
  3. Step 3: Cross multiply
    42,475.44x = 63,713.16 × 11,313.84
  4. Step 4: Simplify right side
    42,475.44x = 720,840,498.13
  5. Step 5: Solve for x
    x = 720,840,498.13/42,475.44
  6. Step 6: Final answer
    x = 16,970.76

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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.