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Finding the Fourth Proportional to 706,906.80, 1,060,360.20 and 538,945.20

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Solution

The fourth proportional to 706,906.80, 1,060,360.20 and 538,945.20 is: 808,417.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,906.80 : 1,060,360.20 = 538,945.20 : x
  2. Step 2: Convert to fraction form
    706,906.80/1,060,360.20 = 538,945.20/x
  3. Step 3: Cross multiply
    706,906.80x = 1,060,360.20 × 538,945.20
  4. Step 4: Simplify right side
    706,906.80x = 571,476,040,061.04
  5. Step 5: Solve for x
    x = 571,476,040,061.04/706,906.80
  6. Step 6: Final answer
    x = 808,417.80

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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.