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Finding the Fourth Proportional to 539,686.90, 808,839.15 and 414,406.90

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Solution

The fourth proportional to 539,686.90, 808,839.15 and 414,406.90 is: 621,079.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,686.90 : 808,839.15 = 414,406.90 : x
  2. Step 2: Convert to fraction form
    539,686.90/808,839.15 = 414,406.90/x
  3. Step 3: Cross multiply
    539,686.90x = 808,839.15 × 414,406.90
  4. Step 4: Simplify right side
    539,686.90x = 335,188,524,750.14
  5. Step 5: Solve for x
    x = 335,188,524,750.14/539,686.90
  6. Step 6: Final answer
    x = 621,079.60

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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.