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Finding the Fourth Proportional to 666,561,750.55, 930,890,625.65 and 666,561,750.55

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Solution

The fourth proportional to 666,561,750.55, 930,890,625.65 and 666,561,750.55 is: 930,890,625.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,561,750.55 : 930,890,625.65 = 666,561,750.55 : x
  2. Step 2: Convert to fraction form
    666,561,750.55/930,890,625.65 = 666,561,750.55/x
  3. Step 3: Cross multiply
    666,561,750.55x = 930,890,625.65 × 666,561,750.55
  4. Step 4: Simplify right side
    666,561,750.55x = 620,496,085,003,848,704
  5. Step 5: Solve for x
    x = 620,496,085,003,848,704/666,561,750.55
  6. Step 6: Final answer
    x = 930,890,625.65

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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.