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Finding the Fourth Proportional to 526,970.70, 727,218.96 and 285,253.21

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Solution

The fourth proportional to 526,970.70, 727,218.96 and 285,253.21 is: 393,649.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,970.70 : 727,218.96 = 285,253.21 : x
  2. Step 2: Convert to fraction form
    526,970.70/727,218.96 = 285,253.21/x
  3. Step 3: Cross multiply
    526,970.70x = 727,218.96 × 285,253.21
  4. Step 4: Simplify right side
    526,970.70x = 207,441,542,712.86
  5. Step 5: Solve for x
    x = 207,441,542,712.86/526,970.70
  6. Step 6: Final answer
    x = 393,649.10

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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.