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Finding the Fourth Proportional to 113,428.57, 169,955.63 and 65,910.27

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Solution

The fourth proportional to 113,428.57, 169,955.63 and 65,910.27 is: 98,756.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,428.57 : 169,955.63 = 65,910.27 : x
  2. Step 2: Convert to fraction form
    113,428.57/169,955.63 = 65,910.27/x
  3. Step 3: Cross multiply
    113,428.57x = 169,955.63 × 65,910.27
  4. Step 4: Simplify right side
    113,428.57x = 11,201,821,626.10
  5. Step 5: Solve for x
    x = 11,201,821,626.10/113,428.57
  6. Step 6: Final answer
    x = 98,756.62

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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.