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Finding the Fourth Proportional to 139,880,338.61, 192,957,374.03 and 98,126,569.26

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Solution

The fourth proportional to 139,880,338.61, 192,957,374.03 and 98,126,569.26 is: 135,360,303.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,880,338.61 : 192,957,374.03 = 98,126,569.26 : x
  2. Step 2: Convert to fraction form
    139,880,338.61/192,957,374.03 = 98,126,569.26/x
  3. Step 3: Cross multiply
    139,880,338.61x = 192,957,374.03 × 98,126,569.26
  4. Step 4: Simplify right side
    139,880,338.61x = 18,934,245,126,491,888
  5. Step 5: Solve for x
    x = 18,934,245,126,491,888/139,880,338.61
  6. Step 6: Final answer
    x = 135,360,303.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.