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Finding the Fourth Proportional to 526,817.78, 727,009.83 and 285,102.12

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Solution

The fourth proportional to 526,817.78, 727,009.83 and 285,102.12 is: 393,441.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,817.78 : 727,009.83 = 285,102.12 : x
  2. Step 2: Convert to fraction form
    526,817.78/727,009.83 = 285,102.12/x
  3. Step 3: Cross multiply
    526,817.78x = 727,009.83 × 285,102.12
  4. Step 4: Simplify right side
    526,817.78x = 207,272,043,793.84
  5. Step 5: Solve for x
    x = 207,272,043,793.84/526,817.78
  6. Step 6: Final answer
    x = 393,441.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.