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Finding the Fourth Proportional to 19,659,172.69, 29,502,038.99 and 6,879,788.11

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Solution

The fourth proportional to 19,659,172.69, 29,502,038.99 and 6,879,788.11 is: 10,324,329.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,659,172.69 : 29,502,038.99 = 6,879,788.11 : x
  2. Step 2: Convert to fraction form
    19,659,172.69/29,502,038.99 = 6,879,788.11/x
  3. Step 3: Cross multiply
    19,659,172.69x = 29,502,038.99 × 6,879,788.11
  4. Step 4: Simplify right side
    19,659,172.69x = 202,967,777,064,158.41
  5. Step 5: Solve for x
    x = 202,967,777,064,158.41/19,659,172.69
  6. Step 6: Final answer
    x = 10,324,329.53

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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.