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Finding the Fourth Proportional to 186,990,357.21, 280,472,233.05 and 57,584,473.71

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Solution

The fourth proportional to 186,990,357.21, 280,472,233.05 and 57,584,473.71 is: 86,372,613.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,990,357.21 : 280,472,233.05 = 57,584,473.71 : x
  2. Step 2: Convert to fraction form
    186,990,357.21/280,472,233.05 = 57,584,473.71/x
  3. Step 3: Cross multiply
    186,990,357.21x = 280,472,233.05 × 57,584,473.71
  4. Step 4: Simplify right side
    186,990,357.21x = 16,150,845,930,452,720
  5. Step 5: Solve for x
    x = 16,150,845,930,452,720/186,990,357.21
  6. Step 6: Final answer
    x = 86,372,613.92

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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.