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Finding the Fourth Proportional to 100,966.70, 151,428.45 and 44,806.70

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Solution

The fourth proportional to 100,966.70, 151,428.45 and 44,806.70 is: 67,200.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,966.70 : 151,428.45 = 44,806.70 : x
  2. Step 2: Convert to fraction form
    100,966.70/151,428.45 = 44,806.70/x
  3. Step 3: Cross multiply
    100,966.70x = 151,428.45 × 44,806.70
  4. Step 4: Simplify right side
    100,966.70x = 6,785,009,130.62
  5. Step 5: Solve for x
    x = 6,785,009,130.62/100,966.70
  6. Step 6: Final answer
    x = 67,200.46

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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.