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Finding the Fourth Proportional to 328,667.55, 492,995.39 and 92,006.61

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Solution

The fourth proportional to 328,667.55, 492,995.39 and 92,006.61 is: 138,008.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,667.55 : 492,995.39 = 92,006.61 : x
  2. Step 2: Convert to fraction form
    328,667.55/492,995.39 = 92,006.61/x
  3. Step 3: Cross multiply
    328,667.55x = 492,995.39 × 92,006.61
  4. Step 4: Simplify right side
    328,667.55x = 45,358,834,119.49
  5. Step 5: Solve for x
    x = 45,358,834,119.49/328,667.55
  6. Step 6: Final answer
    x = 138,008.25

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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.