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Finding the Fourth Proportional to 12,950,927.20, 19,426,390.80 and 9,168,680.80

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Solution

The fourth proportional to 12,950,927.20, 19,426,390.80 and 9,168,680.80 is: 13,753,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,950,927.20 : 19,426,390.80 = 9,168,680.80 : x
  2. Step 2: Convert to fraction form
    12,950,927.20/19,426,390.80 = 9,168,680.80/x
  3. Step 3: Cross multiply
    12,950,927.20x = 19,426,390.80 × 9,168,680.80
  4. Step 4: Simplify right side
    12,950,927.20x = 178,114,376,341,256.66
  5. Step 5: Solve for x
    x = 178,114,376,341,256.66/12,950,927.20
  6. Step 6: Final answer
    x = 13,753,021.20

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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.