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Finding the Fourth Proportional to 70,189.74, 105,315.66 and 36,902.25

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Solution

The fourth proportional to 70,189.74, 105,315.66 and 36,902.25 is: 55,369.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,189.74 : 105,315.66 = 36,902.25 : x
  2. Step 2: Convert to fraction form
    70,189.74/105,315.66 = 36,902.25/x
  3. Step 3: Cross multiply
    70,189.74x = 105,315.66 × 36,902.25
  4. Step 4: Simplify right side
    70,189.74x = 3,886,384,814.24
  5. Step 5: Solve for x
    x = 3,886,384,814.24/70,189.74
  6. Step 6: Final answer
    x = 55,369.70

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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.