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Finding the Fourth Proportional to 91,953,884.80, 137,930,827.20 and 75,514,643.20

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Solution

The fourth proportional to 91,953,884.80, 137,930,827.20 and 75,514,643.20 is: 113,271,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,953,884.80 : 137,930,827.20 = 75,514,643.20 : x
  2. Step 2: Convert to fraction form
    91,953,884.80/137,930,827.20 = 75,514,643.20/x
  3. Step 3: Cross multiply
    91,953,884.80x = 137,930,827.20 × 75,514,643.20
  4. Step 4: Simplify right side
    91,953,884.80x = 10,415,797,202,288,854
  5. Step 5: Solve for x
    x = 10,415,797,202,288,854/91,953,884.80
  6. Step 6: Final answer
    x = 113,271,964.80

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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.