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Finding the Fourth Proportional to 89,830,846.80, 134,494,327.80 and 87,311,422.80

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Solution

The fourth proportional to 89,830,846.80, 134,494,327.80 and 87,311,422.80 is: 130,722,257.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,830,846.80 : 134,494,327.80 = 87,311,422.80 : x
  2. Step 2: Convert to fraction form
    89,830,846.80/134,494,327.80 = 87,311,422.80/x
  3. Step 3: Cross multiply
    89,830,846.80x = 134,494,327.80 × 87,311,422.80
  4. Step 4: Simplify right side
    89,830,846.80x = 11,742,891,118,747,594
  5. Step 5: Solve for x
    x = 11,742,891,118,747,594/89,830,846.80
  6. Step 6: Final answer
    x = 130,722,257.86

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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.