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Finding the Fourth Proportional to 356,006.80, 534,010.20 and 187,296.40

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Solution

The fourth proportional to 356,006.80, 534,010.20 and 187,296.40 is: 280,944.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,006.80 : 534,010.20 = 187,296.40 : x
  2. Step 2: Convert to fraction form
    356,006.80/534,010.20 = 187,296.40/x
  3. Step 3: Cross multiply
    356,006.80x = 534,010.20 × 187,296.40
  4. Step 4: Simplify right side
    356,006.80x = 100,018,188,023.28
  5. Step 5: Solve for x
    x = 100,018,188,023.28/356,006.80
  6. Step 6: Final answer
    x = 280,944.60

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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.