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Finding the Fourth Proportional to 351,415.94, 527,123.91 and 85,176.46

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Solution

The fourth proportional to 351,415.94, 527,123.91 and 85,176.46 is: 127,764.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,415.94 : 527,123.91 = 85,176.46 : x
  2. Step 2: Convert to fraction form
    351,415.94/527,123.91 = 85,176.46/x
  3. Step 3: Cross multiply
    351,415.94x = 527,123.91 × 85,176.46
  4. Step 4: Simplify right side
    351,415.94x = 44,898,548,635.16
  5. Step 5: Solve for x
    x = 44,898,548,635.16/351,415.94
  6. Step 6: Final answer
    x = 127,764.69

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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.