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Finding the Fourth Proportional to 187,171,087.20, 280,756,630.80 and 187,171,087.20

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Solution

The fourth proportional to 187,171,087.20, 280,756,630.80 and 187,171,087.20 is: 280,756,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,171,087.20 : 280,756,630.80 = 187,171,087.20 : x
  2. Step 2: Convert to fraction form
    187,171,087.20/280,756,630.80 = 187,171,087.20/x
  3. Step 3: Cross multiply
    187,171,087.20x = 280,756,630.80 × 187,171,087.20
  4. Step 4: Simplify right side
    187,171,087.20x = 52,549,523,825,445,008
  5. Step 5: Solve for x
    x = 52,549,523,825,445,008/187,171,087.20
  6. Step 6: Final answer
    x = 280,756,630.80

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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.