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Finding the Fourth Proportional to 19,983,270.65, 27,573,978.29 and 11,161,635.17

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Solution

The fourth proportional to 19,983,270.65, 27,573,978.29 and 11,161,635.17 is: 15,401,417.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,983,270.65 : 27,573,978.29 = 11,161,635.17 : x
  2. Step 2: Convert to fraction form
    19,983,270.65/27,573,978.29 = 11,161,635.17/x
  3. Step 3: Cross multiply
    19,983,270.65x = 27,573,978.29 × 11,161,635.17
  4. Step 4: Simplify right side
    19,983,270.65x = 307,770,685,664,802.38
  5. Step 5: Solve for x
    x = 307,770,685,664,802.38/19,983,270.65
  6. Step 6: Final answer
    x = 15,401,417.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.