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Finding the Fourth Proportional to 351,257.36, 526,886.01 and 85,017.86

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Solution

The fourth proportional to 351,257.36, 526,886.01 and 85,017.86 is: 127,526.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,257.36 : 526,886.01 = 85,017.86 : x
  2. Step 2: Convert to fraction form
    351,257.36/526,886.01 = 85,017.86/x
  3. Step 3: Cross multiply
    351,257.36x = 526,886.01 × 85,017.86
  4. Step 4: Simplify right side
    351,257.36x = 44,794,721,034.14
  5. Step 5: Solve for x
    x = 44,794,721,034.14/351,257.36
  6. Step 6: Final answer
    x = 127,526.78

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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.