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Finding the Fourth Proportional to 87,409,991.40, 130,863,044.70 and 87,409,991.40

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Solution

The fourth proportional to 87,409,991.40, 130,863,044.70 and 87,409,991.40 is: 130,863,044.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,409,991.40 : 130,863,044.70 = 87,409,991.40 : x
  2. Step 2: Convert to fraction form
    87,409,991.40/130,863,044.70 = 87,409,991.40/x
  3. Step 3: Cross multiply
    87,409,991.40x = 130,863,044.70 × 87,409,991.40
  4. Step 4: Simplify right side
    87,409,991.40x = 11,438,737,611,804,816
  5. Step 5: Solve for x
    x = 11,438,737,611,804,816/87,409,991.40
  6. Step 6: Final answer
    x = 130,863,044.70

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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.