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Finding the Fourth Proportional to 210,622.44, 316,021.56 and 92,378.64

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Solution

The fourth proportional to 210,622.44, 316,021.56 and 92,378.64 is: 138,606.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,622.44 : 316,021.56 = 92,378.64 : x
  2. Step 2: Convert to fraction form
    210,622.44/316,021.56 = 92,378.64/x
  3. Step 3: Cross multiply
    210,622.44x = 316,021.56 × 92,378.64
  4. Step 4: Simplify right side
    210,622.44x = 29,193,641,923.48
  5. Step 5: Solve for x
    x = 29,193,641,923.48/210,622.44
  6. Step 6: Final answer
    x = 138,606.51

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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.