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Finding the Fourth Proportional to 8,709,843.49, 12,019,893.14 and 4,789,897.63

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Solution

The fourth proportional to 8,709,843.49, 12,019,893.14 and 4,789,897.63 is: 6,610,228.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709,843.49 : 12,019,893.14 = 4,789,897.63 : x
  2. Step 2: Convert to fraction form
    8,709,843.49/12,019,893.14 = 4,789,897.63/x
  3. Step 3: Cross multiply
    8,709,843.49x = 12,019,893.14 × 4,789,897.63
  4. Step 4: Simplify right side
    8,709,843.49x = 57,574,057,646,064.27
  5. Step 5: Solve for x
    x = 57,574,057,646,064.27/8,709,843.49
  6. Step 6: Final answer
    x = 6,610,228.73

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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.