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Finding the Fourth Proportional to 29,685,207.44, 40,978,127.40 and 19,380,763.28

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Solution

The fourth proportional to 29,685,207.44, 40,978,127.40 and 19,380,763.28 is: 26,753,641.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,685,207.44 : 40,978,127.40 = 19,380,763.28 : x
  2. Step 2: Convert to fraction form
    29,685,207.44/40,978,127.40 = 19,380,763.28/x
  3. Step 3: Cross multiply
    29,685,207.44x = 40,978,127.40 × 19,380,763.28
  4. Step 4: Simplify right side
    29,685,207.44x = 794,187,386,797,081.88
  5. Step 5: Solve for x
    x = 794,187,386,797,081.88/29,685,207.44
  6. Step 6: Final answer
    x = 26,753,641.13

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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.