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Finding the Fourth Proportional to 64,019,109.78, 96,028,916.78 and 15,496,885.64

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Solution

The fourth proportional to 64,019,109.78, 96,028,916.78 and 15,496,885.64 is: 23,245,389.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,019,109.78 : 96,028,916.78 = 15,496,885.64 : x
  2. Step 2: Convert to fraction form
    64,019,109.78/96,028,916.78 = 15,496,885.64/x
  3. Step 3: Cross multiply
    64,019,109.78x = 96,028,916.78 × 15,496,885.64
  4. Step 4: Simplify right side
    64,019,109.78x = 1,488,149,141,751,551.50
  5. Step 5: Solve for x
    x = 1,488,149,141,751,551.50/64,019,109.78
  6. Step 6: Final answer
    x = 23,245,389.49

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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.