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Finding the Fourth Proportional to 67,154.31, 100,699.17 and 39,080.67

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Solution

The fourth proportional to 67,154.31, 100,699.17 and 39,080.67 is: 58,602.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,154.31 : 100,699.17 = 39,080.67 : x
  2. Step 2: Convert to fraction form
    67,154.31/100,699.17 = 39,080.67/x
  3. Step 3: Cross multiply
    67,154.31x = 100,699.17 × 39,080.67
  4. Step 4: Simplify right side
    67,154.31x = 3,935,391,032.04
  5. Step 5: Solve for x
    x = 3,935,391,032.04/67,154.31
  6. Step 6: Final answer
    x = 58,602.21

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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.