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Finding the Fourth Proportional to 139,968,510.60, 209,952,765.90 and 134,299,806.60

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Solution

The fourth proportional to 139,968,510.60, 209,952,765.90 and 134,299,806.60 is: 201,449,709.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,510.60 : 209,952,765.90 = 134,299,806.60 : x
  2. Step 2: Convert to fraction form
    139,968,510.60/209,952,765.90 = 134,299,806.60/x
  3. Step 3: Cross multiply
    139,968,510.60x = 209,952,765.90 × 134,299,806.60
  4. Step 4: Simplify right side
    139,968,510.60x = 28,196,615,855,505,076
  5. Step 5: Solve for x
    x = 28,196,615,855,505,076/139,968,510.60
  6. Step 6: Final answer
    x = 201,449,709.90

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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.