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Finding the Fourth Proportional to 104,033.10, 156,049.65 and 86,522.70

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Solution

The fourth proportional to 104,033.10, 156,049.65 and 86,522.70 is: 129,784.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,033.10 : 156,049.65 = 86,522.70 : x
  2. Step 2: Convert to fraction form
    104,033.10/156,049.65 = 86,522.70/x
  3. Step 3: Cross multiply
    104,033.10x = 156,049.65 × 86,522.70
  4. Step 4: Simplify right side
    104,033.10x = 13,501,837,052.06
  5. Step 5: Solve for x
    x = 13,501,837,052.06/104,033.10
  6. Step 6: Final answer
    x = 129,784.05

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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.