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Finding the Fourth Proportional to 6,438,668.18, 8,876,483.57 and 5,136,340.41

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Solution

The fourth proportional to 6,438,668.18, 8,876,483.57 and 5,136,340.41 is: 7,081,067.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438,668.18 : 8,876,483.57 = 5,136,340.41 : x
  2. Step 2: Convert to fraction form
    6,438,668.18/8,876,483.57 = 5,136,340.41/x
  3. Step 3: Cross multiply
    6,438,668.18x = 8,876,483.57 × 5,136,340.41
  4. Step 4: Simplify right side
    6,438,668.18x = 45,592,641,243,241
  5. Step 5: Solve for x
    x = 45,592,641,243,241/6,438,668.18
  6. Step 6: Final answer
    x = 7,081,067.07

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