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Finding the Fourth Proportional to 190,424.40, 285,648.66 and 64,054.68

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Solution

The fourth proportional to 190,424.40, 285,648.66 and 64,054.68 is: 96,086.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,424.40 : 285,648.66 = 64,054.68 : x
  2. Step 2: Convert to fraction form
    190,424.40/285,648.66 = 64,054.68/x
  3. Step 3: Cross multiply
    190,424.40x = 285,648.66 × 64,054.68
  4. Step 4: Simplify right side
    190,424.40x = 18,297,133,508.73
  5. Step 5: Solve for x
    x = 18,297,133,508.73/190,424.40
  6. Step 6: Final answer
    x = 96,086.08

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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.