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Finding the Fourth Proportional to 190,363.79, 284,884.69 and 118,287.11

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Solution

The fourth proportional to 190,363.79, 284,884.69 and 118,287.11 is: 177,019.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,363.79 : 284,884.69 = 118,287.11 : x
  2. Step 2: Convert to fraction form
    190,363.79/284,884.69 = 118,287.11/x
  3. Step 3: Cross multiply
    190,363.79x = 284,884.69 × 118,287.11
  4. Step 4: Simplify right side
    190,363.79x = 33,698,186,663.35
  5. Step 5: Solve for x
    x = 33,698,186,663.35/190,363.79
  6. Step 6: Final answer
    x = 177,019.94

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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.