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Finding the Fourth Proportional to 139,968,682.80, 209,953,024.20 and 59,189,650.80

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Solution

The fourth proportional to 139,968,682.80, 209,953,024.20 and 59,189,650.80 is: 88,784,476.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,682.80 : 209,953,024.20 = 59,189,650.80 : x
  2. Step 2: Convert to fraction form
    139,968,682.80/209,953,024.20 = 59,189,650.80/x
  3. Step 3: Cross multiply
    139,968,682.80x = 209,953,024.20 × 59,189,650.80
  4. Step 4: Simplify right side
    139,968,682.80x = 12,427,046,186,801,948
  5. Step 5: Solve for x
    x = 12,427,046,186,801,948/139,968,682.80
  6. Step 6: Final answer
    x = 88,784,476.20

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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.