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Finding the Fourth Proportional to 228,615.12, 315,571.68 and 186,099.84

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Solution

The fourth proportional to 228,615.12, 315,571.68 and 186,099.84 is: 256,885.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,615.12 : 315,571.68 = 186,099.84 : x
  2. Step 2: Convert to fraction form
    228,615.12/315,571.68 = 186,099.84/x
  3. Step 3: Cross multiply
    228,615.12x = 315,571.68 × 186,099.84
  4. Step 4: Simplify right side
    228,615.12x = 58,727,839,156.53
  5. Step 5: Solve for x
    x = 58,727,839,156.53/228,615.12
  6. Step 6: Final answer
    x = 256,885.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.