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Finding the Fourth Proportional to 5,328,689.93, 7,994,020.96 and 1,686,336.54

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Solution

The fourth proportional to 5,328,689.93, 7,994,020.96 and 1,686,336.54 is: 2,529,816.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328,689.93 : 7,994,020.96 = 1,686,336.54 : x
  2. Step 2: Convert to fraction form
    5,328,689.93/7,994,020.96 = 1,686,336.54/x
  3. Step 3: Cross multiply
    5,328,689.93x = 7,994,020.96 × 1,686,336.54
  4. Step 4: Simplify right side
    5,328,689.93x = 13,480,609,609,018.58
  5. Step 5: Solve for x
    x = 13,480,609,609,018.58/5,328,689.93
  6. Step 6: Final answer
    x = 2,529,816.86

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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.