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Finding the Fourth Proportional to 70,186.68, 105,181.62 and 30,661.56

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Solution

The fourth proportional to 70,186.68, 105,181.62 and 30,661.56 is: 45,949.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,186.68 : 105,181.62 = 30,661.56 : x
  2. Step 2: Convert to fraction form
    70,186.68/105,181.62 = 30,661.56/x
  3. Step 3: Cross multiply
    70,186.68x = 105,181.62 × 30,661.56
  4. Step 4: Simplify right side
    70,186.68x = 3,225,032,552.53
  5. Step 5: Solve for x
    x = 3,225,032,552.53/70,186.68
  6. Step 6: Final answer
    x = 45,949.35

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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.