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Finding the Fourth Proportional to 139,968,114.20, 209,952,171.30 and 49,100,888.60

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Solution

The fourth proportional to 139,968,114.20, 209,952,171.30 and 49,100,888.60 is: 73,651,332.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,114.20 : 209,952,171.30 = 49,100,888.60 : x
  2. Step 2: Convert to fraction form
    139,968,114.20/209,952,171.30 = 49,100,888.60/x
  3. Step 3: Cross multiply
    139,968,114.20x = 209,952,171.30 × 49,100,888.60
  4. Step 4: Simplify right side
    139,968,114.20x = 10,308,838,174,329,418
  5. Step 5: Solve for x
    x = 10,308,838,174,329,418/139,968,114.20
  6. Step 6: Final answer
    x = 73,651,332.90

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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.