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Finding the Fourth Proportional to 190,606.13, 285,909.19 and 65,947.13

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Solution

The fourth proportional to 190,606.13, 285,909.19 and 65,947.13 is: 98,920.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,606.13 : 285,909.19 = 65,947.13 : x
  2. Step 2: Convert to fraction form
    190,606.13/285,909.19 = 65,947.13/x
  3. Step 3: Cross multiply
    190,606.13x = 285,909.19 × 65,947.13
  4. Step 4: Simplify right side
    190,606.13x = 18,854,890,521.12
  5. Step 5: Solve for x
    x = 18,854,890,521.12/190,606.13
  6. Step 6: Final answer
    x = 98,920.69

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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.