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Finding the Fourth Proportional to 190,543.68, 262,948.80 and 105,660.96

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Solution

The fourth proportional to 190,543.68, 262,948.80 and 105,660.96 is: 145,811.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,543.68 : 262,948.80 = 105,660.96 : x
  2. Step 2: Convert to fraction form
    190,543.68/262,948.80 = 105,660.96/x
  3. Step 3: Cross multiply
    190,543.68x = 262,948.80 × 105,660.96
  4. Step 4: Simplify right side
    190,543.68x = 27,783,422,638.85
  5. Step 5: Solve for x
    x = 27,783,422,638.85/190,543.68
  6. Step 6: Final answer
    x = 145,811.30

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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.