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Finding the Fourth Proportional to 190,833.61, 286,381.62 and 66,174.61

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Solution

The fourth proportional to 190,833.61, 286,381.62 and 66,174.61 is: 99,307.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,833.61 : 286,381.62 = 66,174.61 : x
  2. Step 2: Convert to fraction form
    190,833.61/286,381.62 = 66,174.61/x
  3. Step 3: Cross multiply
    190,833.61x = 286,381.62 × 66,174.61
  4. Step 4: Simplify right side
    190,833.61x = 18,951,192,014.67
  5. Step 5: Solve for x
    x = 18,951,192,014.67/190,833.61
  6. Step 6: Final answer
    x = 99,307.41

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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.