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Finding the Fourth Proportional to 351,763.93, 527,638.59 and 85,525.84

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Solution

The fourth proportional to 351,763.93, 527,638.59 and 85,525.84 is: 128,286.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,763.93 : 527,638.59 = 85,525.84 : x
  2. Step 2: Convert to fraction form
    351,763.93/527,638.59 = 85,525.84/x
  3. Step 3: Cross multiply
    351,763.93x = 527,638.59 × 85,525.84
  4. Step 4: Simplify right side
    351,763.93x = 45,126,733,626.17
  5. Step 5: Solve for x
    x = 45,126,733,626.17/351,763.93
  6. Step 6: Final answer
    x = 128,286.98

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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.