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Finding the Fourth Proportional to 666,561,785.80, 930,890,675 and 666,561,785.80

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Solution

The fourth proportional to 666,561,785.80, 930,890,675 and 666,561,785.80 is: 930,890,675.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,561,785.80 : 930,890,675 = 666,561,785.80 : x
  2. Step 2: Convert to fraction form
    666,561,785.80/930,890,675 = 666,561,785.80/x
  3. Step 3: Cross multiply
    666,561,785.80x = 930,890,675 × 666,561,785.80
  4. Step 4: Simplify right side
    666,561,785.80x = 620,496,150,712,567,424
  5. Step 5: Solve for x
    x = 620,496,150,712,567,424/666,561,785.80
  6. Step 6: Final answer
    x = 930,890,675.00

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.