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Finding the Fourth Proportional to 57,203,608.71, 85,793,307.65 and 18,856,007.07

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Solution

The fourth proportional to 57,203,608.71, 85,793,307.65 and 18,856,007.07 is: 28,280,020.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,203,608.71 : 85,793,307.65 = 18,856,007.07 : x
  2. Step 2: Convert to fraction form
    57,203,608.71/85,793,307.65 = 18,856,007.07/x
  3. Step 3: Cross multiply
    57,203,608.71x = 85,793,307.65 × 18,856,007.07
  4. Step 4: Simplify right side
    57,203,608.71x = 1,617,719,215,512,805
  5. Step 5: Solve for x
    x = 1,617,719,215,512,805/57,203,608.71
  6. Step 6: Final answer
    x = 28,280,020.30

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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.