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Finding the Fourth Proportional to 106,053.80, 159,080.70 and 88,687.40

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Solution

The fourth proportional to 106,053.80, 159,080.70 and 88,687.40 is: 133,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,053.80 : 159,080.70 = 88,687.40 : x
  2. Step 2: Convert to fraction form
    106,053.80/159,080.70 = 88,687.40/x
  3. Step 3: Cross multiply
    106,053.80x = 159,080.70 × 88,687.40
  4. Step 4: Simplify right side
    106,053.80x = 14,108,453,673.18
  5. Step 5: Solve for x
    x = 14,108,453,673.18/106,053.80
  6. Step 6: Final answer
    x = 133,031.10

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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.