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Finding the Fourth Proportional to 19,967,448.64, 29,954,905.76 and 8,001,117.76

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Solution

The fourth proportional to 19,967,448.64, 29,954,905.76 and 8,001,117.76 is: 12,003,172.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,967,448.64 : 29,954,905.76 = 8,001,117.76 : x
  2. Step 2: Convert to fraction form
    19,967,448.64/29,954,905.76 = 8,001,117.76/x
  3. Step 3: Cross multiply
    19,967,448.64x = 29,954,905.76 × 8,001,117.76
  4. Step 4: Simplify right side
    19,967,448.64x = 239,672,728,475,462.31
  5. Step 5: Solve for x
    x = 239,672,728,475,462.31/19,967,448.64
  6. Step 6: Final answer
    x = 12,003,172.40

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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.