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Finding the Fourth Proportional to 194,486.40, 291,859.20 and 89,251.20

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Solution

The fourth proportional to 194,486.40, 291,859.20 and 89,251.20 is: 133,936.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,486.40 : 291,859.20 = 89,251.20 : x
  2. Step 2: Convert to fraction form
    194,486.40/291,859.20 = 89,251.20/x
  3. Step 3: Cross multiply
    194,486.40x = 291,859.20 × 89,251.20
  4. Step 4: Simplify right side
    194,486.40x = 26,048,783,831.04
  5. Step 5: Solve for x
    x = 26,048,783,831.04/194,486.40
  6. Step 6: Final answer
    x = 133,936.27

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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.