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Finding the Fourth Proportional to 192,368.81, 265,469.79 and 105,155.69

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Solution

The fourth proportional to 192,368.81, 265,469.79 and 105,155.69 is: 145,115.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,368.81 : 265,469.79 = 105,155.69 : x
  2. Step 2: Convert to fraction form
    192,368.81/265,469.79 = 105,155.69/x
  3. Step 3: Cross multiply
    192,368.81x = 265,469.79 × 105,155.69
  4. Step 4: Simplify right side
    192,368.81x = 27,915,659,999.61
  5. Step 5: Solve for x
    x = 27,915,659,999.61/192,368.81
  6. Step 6: Final answer
    x = 145,115.31

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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.