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Finding the Fourth Proportional to 87,410,019.40, 130,863,086.70 and 87,410,019.40

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Solution

The fourth proportional to 87,410,019.40, 130,863,086.70 and 87,410,019.40 is: 130,863,086.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,410,019.40 : 130,863,086.70 = 87,410,019.40 : x
  2. Step 2: Convert to fraction form
    87,410,019.40/130,863,086.70 = 87,410,019.40/x
  3. Step 3: Cross multiply
    87,410,019.40x = 130,863,086.70 × 87,410,019.40
  4. Step 4: Simplify right side
    87,410,019.40x = 11,438,744,947,190,884
  5. Step 5: Solve for x
    x = 11,438,744,947,190,884/87,410,019.40
  6. Step 6: Final answer
    x = 130,863,086.70

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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.