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Finding the Fourth Proportional to 193,993,696.60, 290,990,544.90 and 78,919,005.40

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Solution

The fourth proportional to 193,993,696.60, 290,990,544.90 and 78,919,005.40 is: 118,378,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,993,696.60 : 290,990,544.90 = 78,919,005.40 : x
  2. Step 2: Convert to fraction form
    193,993,696.60/290,990,544.90 = 78,919,005.40/x
  3. Step 3: Cross multiply
    193,993,696.60x = 290,990,544.90 × 78,919,005.40
  4. Step 4: Simplify right side
    193,993,696.60x = 22,964,684,384,312,044
  5. Step 5: Solve for x
    x = 22,964,684,384,312,044/193,993,696.60
  6. Step 6: Final answer
    x = 118,378,508.10

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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.