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Finding the Fourth Proportional to 104,042.10, 156,063.15 and 86,546.10

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Solution

The fourth proportional to 104,042.10, 156,063.15 and 86,546.10 is: 129,819.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,042.10 : 156,063.15 = 86,546.10 : x
  2. Step 2: Convert to fraction form
    104,042.10/156,063.15 = 86,546.10/x
  3. Step 3: Cross multiply
    104,042.10x = 156,063.15 × 86,546.10
  4. Step 4: Simplify right side
    104,042.10x = 13,506,656,986.22
  5. Step 5: Solve for x
    x = 13,506,656,986.22/104,042.10
  6. Step 6: Final answer
    x = 129,819.15

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1.5x scale

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.