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Finding the Fourth Proportional to 210,722.94, 316,250.46 and 92,475.90

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Solution

The fourth proportional to 210,722.94, 316,250.46 and 92,475.90 is: 138,786.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,722.94 : 316,250.46 = 92,475.90 : x
  2. Step 2: Convert to fraction form
    210,722.94/316,250.46 = 92,475.90/x
  3. Step 3: Cross multiply
    210,722.94x = 316,250.46 × 92,475.90
  4. Step 4: Simplify right side
    210,722.94x = 29,245,545,913.91
  5. Step 5: Solve for x
    x = 29,245,545,913.91/210,722.94
  6. Step 6: Final answer
    x = 138,786.72

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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.