Home / 84,995,613.40-127,493,420.10-78,193,168.60

Finding the Fourth Proportional to 84,995,613.40, 127,493,420.10 and 78,193,168.60

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Solution

The fourth proportional to 84,995,613.40, 127,493,420.10 and 78,193,168.60 is: 117,289,752.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,995,613.40 : 127,493,420.10 = 78,193,168.60 : x
  2. Step 2: Convert to fraction form
    84,995,613.40/127,493,420.10 = 78,193,168.60/x
  3. Step 3: Cross multiply
    84,995,613.40x = 127,493,420.10 × 78,193,168.60
  4. Step 4: Simplify right side
    84,995,613.40x = 9,969,114,493,269,928
  5. Step 5: Solve for x
    x = 9,969,114,493,269,928/84,995,613.40
  6. Step 6: Final answer
    x = 117,289,752.90

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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.