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Finding the Fourth Proportional to 139,901,752.60, 209,852,628.90 and 44,163,640.60

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Solution

The fourth proportional to 139,901,752.60, 209,852,628.90 and 44,163,640.60 is: 66,245,460.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,901,752.60 : 209,852,628.90 = 44,163,640.60 : x
  2. Step 2: Convert to fraction form
    139,901,752.60/209,852,628.90 = 44,163,640.60/x
  3. Step 3: Cross multiply
    139,901,752.60x = 209,852,628.90 × 44,163,640.60
  4. Step 4: Simplify right side
    139,901,752.60x = 9,267,856,081,704,774
  5. Step 5: Solve for x
    x = 9,267,856,081,704,774/139,901,752.60
  6. Step 6: Final answer
    x = 66,245,460.90

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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.