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Finding the Fourth Proportional to 190,303.40, 285,344.40 and 71,983.96

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Solution

The fourth proportional to 190,303.40, 285,344.40 and 71,983.96 is: 107,934.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,303.40 : 285,344.40 = 71,983.96 : x
  2. Step 2: Convert to fraction form
    190,303.40/285,344.40 = 71,983.96/x
  3. Step 3: Cross multiply
    190,303.40x = 285,344.40 × 71,983.96
  4. Step 4: Simplify right side
    190,303.40x = 20,540,219,875.82
  5. Step 5: Solve for x
    x = 20,540,219,875.82/190,303.40
  6. Step 6: Final answer
    x = 107,934.07

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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.