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Finding the Fourth Proportional to 49,178,081.60, 68,950,091.20 and 49,178,081.60

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Solution

The fourth proportional to 49,178,081.60, 68,950,091.20 and 49,178,081.60 is: 68,950,091.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,178,081.60 : 68,950,091.20 = 49,178,081.60 : x
  2. Step 2: Convert to fraction form
    49,178,081.60/68,950,091.20 = 49,178,081.60/x
  3. Step 3: Cross multiply
    49,178,081.60x = 68,950,091.20 × 49,178,081.60
  4. Step 4: Simplify right side
    49,178,081.60x = 3,390,833,211,361,042
  5. Step 5: Solve for x
    x = 3,390,833,211,361,042/49,178,081.60
  6. Step 6: Final answer
    x = 68,950,091.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.