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Finding the Fourth Proportional to 13,805,416.80, 20,707,930.80 and 6,232,370.40

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Solution

The fourth proportional to 13,805,416.80, 20,707,930.80 and 6,232,370.40 is: 9,348,467.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,805,416.80 : 20,707,930.80 = 6,232,370.40 : x
  2. Step 2: Convert to fraction form
    13,805,416.80/20,707,930.80 = 6,232,370.40/x
  3. Step 3: Cross multiply
    13,805,416.80x = 20,707,930.80 × 6,232,370.40
  4. Step 4: Simplify right side
    13,805,416.80x = 129,059,494,963,168.33
  5. Step 5: Solve for x
    x = 129,059,494,963,168.33/13,805,416.80
  6. Step 6: Final answer
    x = 9,348,467.84

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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.