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Finding the Fourth Proportional to 70,478.44, 105,730.62 and 57,446.44

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Solution

The fourth proportional to 70,478.44, 105,730.62 and 57,446.44 is: 86,180.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,478.44 : 105,730.62 = 57,446.44 : x
  2. Step 2: Convert to fraction form
    70,478.44/105,730.62 = 57,446.44/x
  3. Step 3: Cross multiply
    70,478.44x = 105,730.62 × 57,446.44
  4. Step 4: Simplify right side
    70,478.44x = 6,073,847,717.99
  5. Step 5: Solve for x
    x = 6,073,847,717.99/70,478.44
  6. Step 6: Final answer
    x = 86,180.22

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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.