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Finding the Fourth Proportional to 70,969.15, 106,451.38 and 28,836.73

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Solution

The fourth proportional to 70,969.15, 106,451.38 and 28,836.73 is: 43,254.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,969.15 : 106,451.38 = 28,836.73 : x
  2. Step 2: Convert to fraction form
    70,969.15/106,451.38 = 28,836.73/x
  3. Step 3: Cross multiply
    70,969.15x = 106,451.38 × 28,836.73
  4. Step 4: Simplify right side
    70,969.15x = 3,069,709,703.19
  5. Step 5: Solve for x
    x = 3,069,709,703.19/70,969.15
  6. Step 6: Final answer
    x = 43,254.14

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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.