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Finding the Fourth Proportional to 351,239.76, 526,859.66 and 85,000.30

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Solution

The fourth proportional to 351,239.76, 526,859.66 and 85,000.30 is: 127,500.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,239.76 : 526,859.66 = 85,000.30 : x
  2. Step 2: Convert to fraction form
    351,239.76/526,859.66 = 85,000.30/x
  3. Step 3: Cross multiply
    351,239.76x = 526,859.66 × 85,000.30
  4. Step 4: Simplify right side
    351,239.76x = 44,783,228,053.25
  5. Step 5: Solve for x
    x = 44,783,228,053.25/351,239.76
  6. Step 6: Final answer
    x = 127,500.45

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Double scale
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Similar ratio
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1.5x scale

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.