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Finding the Fourth Proportional to 83,986,455.30, 125,979,682.95 and 83,986,455.30

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Solution

The fourth proportional to 83,986,455.30, 125,979,682.95 and 83,986,455.30 is: 125,979,682.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,986,455.30 : 125,979,682.95 = 83,986,455.30 : x
  2. Step 2: Convert to fraction form
    83,986,455.30/125,979,682.95 = 83,986,455.30/x
  3. Step 3: Cross multiply
    83,986,455.30x = 125,979,682.95 × 83,986,455.30
  4. Step 4: Simplify right side
    83,986,455.30x = 10,580,587,010,788,348
  5. Step 5: Solve for x
    x = 10,580,587,010,788,348/83,986,455.30
  6. Step 6: Final answer
    x = 125,979,682.95

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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.