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Finding the Fourth Proportional to 111,203.42, 153,471.69 and 63,463.91

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Solution

The fourth proportional to 111,203.42, 153,471.69 and 63,463.91 is: 87,586.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,203.42 : 153,471.69 = 63,463.91 : x
  2. Step 2: Convert to fraction form
    111,203.42/153,471.69 = 63,463.91/x
  3. Step 3: Cross multiply
    111,203.42x = 153,471.69 × 63,463.91
  4. Step 4: Simplify right side
    111,203.42x = 9,739,912,754.35
  5. Step 5: Solve for x
    x = 9,739,912,754.35/111,203.42
  6. Step 6: Final answer
    x = 87,586.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.