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Finding the Fourth Proportional to 113,729.40, 170,334.90 and 67,073.40

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Solution

The fourth proportional to 113,729.40, 170,334.90 and 67,073.40 is: 100,457.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,729.40 : 170,334.90 = 67,073.40 : x
  2. Step 2: Convert to fraction form
    113,729.40/170,334.90 = 67,073.40/x
  3. Step 3: Cross multiply
    113,729.40x = 170,334.90 × 67,073.40
  4. Step 4: Simplify right side
    113,729.40x = 11,424,940,881.66
  5. Step 5: Solve for x
    x = 11,424,940,881.66/113,729.40
  6. Step 6: Final answer
    x = 100,457.23

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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.