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Finding the Fourth Proportional to 8,689,896.88, 11,992,064.58 and 4,822,421.11

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Solution

The fourth proportional to 8,689,896.88, 11,992,064.58 and 4,822,421.11 is: 6,654,944.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689,896.88 : 11,992,064.58 = 4,822,421.11 : x
  2. Step 2: Convert to fraction form
    8,689,896.88/11,992,064.58 = 4,822,421.11/x
  3. Step 3: Cross multiply
    8,689,896.88x = 11,992,064.58 × 4,822,421.11
  4. Step 4: Simplify right side
    8,689,896.88x = 57,830,785,420,550.48
  5. Step 5: Solve for x
    x = 57,830,785,420,550.48/8,689,896.88
  6. Step 6: Final answer
    x = 6,654,944.96

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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.