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Finding the Fourth Proportional to 717,759.28, 990,499.89 and 411,883.77

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Solution

The fourth proportional to 717,759.28, 990,499.89 and 411,883.77 is: 568,395.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,759.28 : 990,499.89 = 411,883.77 : x
  2. Step 2: Convert to fraction form
    717,759.28/990,499.89 = 411,883.77/x
  3. Step 3: Cross multiply
    717,759.28x = 990,499.89 × 411,883.77
  4. Step 4: Simplify right side
    717,759.28x = 407,970,828,877.79
  5. Step 5: Solve for x
    x = 407,970,828,877.79/717,759.28
  6. Step 6: Final answer
    x = 568,395.06

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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.