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Finding the Fourth Proportional to 190,641.62, 263,085.54 and 105,758.76

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Solution

The fourth proportional to 190,641.62, 263,085.54 and 105,758.76 is: 145,947.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,641.62 : 263,085.54 = 105,758.76 : x
  2. Step 2: Convert to fraction form
    190,641.62/263,085.54 = 105,758.76/x
  3. Step 3: Cross multiply
    190,641.62x = 263,085.54 × 105,758.76
  4. Step 4: Simplify right side
    190,641.62x = 27,823,600,484.33
  5. Step 5: Solve for x
    x = 27,823,600,484.33/190,641.62
  6. Step 6: Final answer
    x = 145,947.15

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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.