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Finding the Fourth Proportional to 70,119.29, 105,217.20 and 40,594.79

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Solution

The fourth proportional to 70,119.29, 105,217.20 and 40,594.79 is: 60,914.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,119.29 : 105,217.20 = 40,594.79 : x
  2. Step 2: Convert to fraction form
    70,119.29/105,217.20 = 40,594.79/x
  3. Step 3: Cross multiply
    70,119.29x = 105,217.20 × 40,594.79
  4. Step 4: Simplify right side
    70,119.29x = 4,271,269,923.76
  5. Step 5: Solve for x
    x = 4,271,269,923.76/70,119.29
  6. Step 6: Final answer
    x = 60,914.34

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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.