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Finding the Fourth Proportional to 190,632.62, 285,731.45 and 89,324.70

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Solution

The fourth proportional to 190,632.62, 285,731.45 and 89,324.70 is: 133,885.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,632.62 : 285,731.45 = 89,324.70 : x
  2. Step 2: Convert to fraction form
    190,632.62/285,731.45 = 89,324.70/x
  3. Step 3: Cross multiply
    190,632.62x = 285,731.45 × 89,324.70
  4. Step 4: Simplify right side
    190,632.62x = 25,522,875,605.19
  5. Step 5: Solve for x
    x = 25,522,875,605.19/190,632.62
  6. Step 6: Final answer
    x = 133,885.15

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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.