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Finding the Fourth Proportional to 5,661,291.78, 8,490,731.81 and 1,616,705.82

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Solution

The fourth proportional to 5,661,291.78, 8,490,731.81 and 1,616,705.82 is: 2,424,714.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661,291.78 : 8,490,731.81 = 1,616,705.82 : x
  2. Step 2: Convert to fraction form
    5,661,291.78/8,490,731.81 = 1,616,705.82/x
  3. Step 3: Cross multiply
    5,661,291.78x = 8,490,731.81 × 1,616,705.82
  4. Step 4: Simplify right side
    5,661,291.78x = 13,727,015,525,202.61
  5. Step 5: Solve for x
    x = 13,727,015,525,202.61/5,661,291.78
  6. Step 6: Final answer
    x = 2,424,714.37

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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.