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Finding the Fourth Proportional to 526,906.94, 727,133.78 and 285,189.45

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Solution

The fourth proportional to 526,906.94, 727,133.78 and 285,189.45 is: 393,562.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,906.94 : 727,133.78 = 285,189.45 : x
  2. Step 2: Convert to fraction form
    526,906.94/727,133.78 = 285,189.45/x
  3. Step 3: Cross multiply
    526,906.94x = 727,133.78 × 285,189.45
  4. Step 4: Simplify right side
    526,906.94x = 207,370,877,733.01
  5. Step 5: Solve for x
    x = 207,370,877,733.01/526,906.94
  6. Step 6: Final answer
    x = 393,562.63

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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.