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Finding the Fourth Proportional to 13,894,629.19, 20,843,953.08 and 5,256,387.43

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Solution

The fourth proportional to 13,894,629.19, 20,843,953.08 and 5,256,387.43 is: 7,885,341.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,894,629.19 : 20,843,953.08 = 5,256,387.43 : x
  2. Step 2: Convert to fraction form
    13,894,629.19/20,843,953.08 = 5,256,387.43/x
  3. Step 3: Cross multiply
    13,894,629.19x = 20,843,953.08 × 5,256,387.43
  4. Step 4: Simplify right side
    13,894,629.19x = 109,563,892,961,221.77
  5. Step 5: Solve for x
    x = 109,563,892,961,221.77/13,894,629.19
  6. Step 6: Final answer
    x = 7,885,341.27

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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.