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Finding the Fourth Proportional to 67,784,429.80, 101,676,644.70 and 21,726,209.80

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Solution

The fourth proportional to 67,784,429.80, 101,676,644.70 and 21,726,209.80 is: 32,589,314.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,784,429.80 : 101,676,644.70 = 21,726,209.80 : x
  2. Step 2: Convert to fraction form
    67,784,429.80/101,676,644.70 = 21,726,209.80/x
  3. Step 3: Cross multiply
    67,784,429.80x = 101,676,644.70 × 21,726,209.80
  4. Step 4: Simplify right side
    67,784,429.80x = 2,209,048,114,512,258.25
  5. Step 5: Solve for x
    x = 2,209,048,114,512,258.25/67,784,429.80
  6. Step 6: Final answer
    x = 32,589,314.70

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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.