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Finding the Fourth Proportional to 113,428.44, 169,955.45 and 65,910.15

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Solution

The fourth proportional to 113,428.44, 169,955.45 and 65,910.15 is: 98,756.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,428.44 : 169,955.45 = 65,910.15 : x
  2. Step 2: Convert to fraction form
    113,428.44/169,955.45 = 65,910.15/x
  3. Step 3: Cross multiply
    113,428.44x = 169,955.45 × 65,910.15
  4. Step 4: Simplify right side
    113,428.44x = 11,201,788,023.49
  5. Step 5: Solve for x
    x = 11,201,788,023.49/113,428.44
  6. Step 6: Final answer
    x = 98,756.43

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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.