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Finding the Fourth Proportional to 66,644,782.80, 99,971,560.57 and 17,461,840.41

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Solution

The fourth proportional to 66,644,782.80, 99,971,560.57 and 17,461,840.41 is: 26,193,909.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,644,782.80 : 99,971,560.57 = 17,461,840.41 : x
  2. Step 2: Convert to fraction form
    66,644,782.80/99,971,560.57 = 17,461,840.41/x
  3. Step 3: Cross multiply
    66,644,782.80x = 99,971,560.57 × 17,461,840.41
  4. Step 4: Simplify right side
    66,644,782.80x = 1,745,687,436,152,506.25
  5. Step 5: Solve for x
    x = 1,745,687,436,152,506.25/66,644,782.80
  6. Step 6: Final answer
    x = 26,193,909.90

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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.