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Finding the Fourth Proportional to 19,876,805.20, 29,799,461.40 and 10,901,357.20

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Solution

The fourth proportional to 19,876,805.20, 29,799,461.40 and 10,901,357.20 is: 16,343,399.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876,805.20 : 29,799,461.40 = 10,901,357.20 : x
  2. Step 2: Convert to fraction form
    19,876,805.20/29,799,461.40 = 10,901,357.20/x
  3. Step 3: Cross multiply
    19,876,805.20x = 29,799,461.40 × 10,901,357.20
  4. Step 4: Simplify right side
    19,876,805.20x = 324,854,573,089,012.06
  5. Step 5: Solve for x
    x = 324,854,573,089,012.06/19,876,805.20
  6. Step 6: Final answer
    x = 16,343,399.75

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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.