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Finding the Fourth Proportional to 87,216,415.20, 130,541,187.60 and 87,216,415.20

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Solution

The fourth proportional to 87,216,415.20, 130,541,187.60 and 87,216,415.20 is: 130,541,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,216,415.20 : 130,541,187.60 = 87,216,415.20 : x
  2. Step 2: Convert to fraction form
    87,216,415.20/130,541,187.60 = 87,216,415.20/x
  3. Step 3: Cross multiply
    87,216,415.20x = 130,541,187.60 × 87,216,415.20
  4. Step 4: Simplify right side
    87,216,415.20x = 11,385,334,418,422,692
  5. Step 5: Solve for x
    x = 11,385,334,418,422,692/87,216,415.20
  6. Step 6: Final answer
    x = 130,541,187.60

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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.