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Finding the Fourth Proportional to 2,913,696.61, 4,019,847.01 and 1,689,327.88

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Solution

The fourth proportional to 2,913,696.61, 4,019,847.01 and 1,689,327.88 is: 2,330,661.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913,696.61 : 4,019,847.01 = 1,689,327.88 : x
  2. Step 2: Convert to fraction form
    2,913,696.61/4,019,847.01 = 1,689,327.88/x
  3. Step 3: Cross multiply
    2,913,696.61x = 4,019,847.01 × 1,689,327.88
  4. Step 4: Simplify right side
    2,913,696.61x = 6,790,839,613,054.70
  5. Step 5: Solve for x
    x = 6,790,839,613,054.70/2,913,696.61
  6. Step 6: Final answer
    x = 2,330,661.19

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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.