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Finding the Fourth Proportional to 139,968,757.80, 209,953,136.70 and 59,189,725.80

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Solution

The fourth proportional to 139,968,757.80, 209,953,136.70 and 59,189,725.80 is: 88,784,588.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,757.80 : 209,953,136.70 = 59,189,725.80 : x
  2. Step 2: Convert to fraction form
    139,968,757.80/209,953,136.70 = 59,189,725.80/x
  3. Step 3: Cross multiply
    139,968,757.80x = 209,953,136.70 × 59,189,725.80
  4. Step 4: Simplify right side
    139,968,757.80x = 12,427,068,592,122,916
  5. Step 5: Solve for x
    x = 12,427,068,592,122,916/139,968,757.80
  6. Step 6: Final answer
    x = 88,784,588.70

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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.