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Finding the Fourth Proportional to 87,090.98, 130,510.38 and 60,045.56

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Solution

The fourth proportional to 87,090.98, 130,510.38 and 60,045.56 is: 89,981.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,090.98 : 130,510.38 = 60,045.56 : x
  2. Step 2: Convert to fraction form
    87,090.98/130,510.38 = 60,045.56/x
  3. Step 3: Cross multiply
    87,090.98x = 130,510.38 × 60,045.56
  4. Step 4: Simplify right side
    87,090.98x = 7,836,568,852.91
  5. Step 5: Solve for x
    x = 7,836,568,852.91/87,090.98
  6. Step 6: Final answer
    x = 89,981.41

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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.