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Finding the Fourth Proportional to 6,793,938.60, 9,375,893.28 and 3,893,889.12

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Solution

The fourth proportional to 6,793,938.60, 9,375,893.28 and 3,893,889.12 is: 5,373,714.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,793,938.60 : 9,375,893.28 = 3,893,889.12 : x
  2. Step 2: Convert to fraction form
    6,793,938.60/9,375,893.28 = 3,893,889.12/x
  3. Step 3: Cross multiply
    6,793,938.60x = 9,375,893.28 × 3,893,889.12
  4. Step 4: Simplify right side
    6,793,938.60x = 36,508,688,833,273.11
  5. Step 5: Solve for x
    x = 36,508,688,833,273.11/6,793,938.60
  6. Step 6: Final answer
    x = 5,373,714.86

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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.