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Finding the Fourth Proportional to 8,561,798.85, 12,840,733.05 and 5,104,516.81

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Solution

The fourth proportional to 8,561,798.85, 12,840,733.05 and 5,104,516.81 is: 7,655,603.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,561,798.85 : 12,840,733.05 = 5,104,516.81 : x
  2. Step 2: Convert to fraction form
    8,561,798.85/12,840,733.05 = 5,104,516.81/x
  3. Step 3: Cross multiply
    8,561,798.85x = 12,840,733.05 × 5,104,516.81
  4. Step 4: Simplify right side
    8,561,798.85x = 65,545,737,707,993.09
  5. Step 5: Solve for x
    x = 65,545,737,707,993.09/8,561,798.85
  6. Step 6: Final answer
    x = 7,655,603.55

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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.