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Finding the Fourth Proportional to 7,893,516.78, 10,893,053.01 and 4,271,844.78

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Solution

The fourth proportional to 7,893,516.78, 10,893,053.01 and 4,271,844.78 is: 5,895,145.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,893,516.78 : 10,893,053.01 = 4,271,844.78 : x
  2. Step 2: Convert to fraction form
    7,893,516.78/10,893,053.01 = 4,271,844.78/x
  3. Step 3: Cross multiply
    7,893,516.78x = 10,893,053.01 × 4,271,844.78
  4. Step 4: Simplify right side
    7,893,516.78x = 46,533,431,639,031.79
  5. Step 5: Solve for x
    x = 46,533,431,639,031.79/7,893,516.78
  6. Step 6: Final answer
    x = 5,895,145.72

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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.