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Finding the Fourth Proportional to 67,160,690.80, 100,765,919.40 and 64,672,370.80

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Solution

The fourth proportional to 67,160,690.80, 100,765,919.40 and 64,672,370.80 is: 97,032,517.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,160,690.80 : 100,765,919.40 = 64,672,370.80 : x
  2. Step 2: Convert to fraction form
    67,160,690.80/100,765,919.40 = 64,672,370.80/x
  3. Step 3: Cross multiply
    67,160,690.80x = 100,765,919.40 × 64,672,370.80
  4. Step 4: Simplify right side
    67,160,690.80x = 6,516,770,903,439,714
  5. Step 5: Solve for x
    x = 6,516,770,903,439,714/67,160,690.80
  6. Step 6: Final answer
    x = 97,032,517.47

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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.