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Finding the Fourth Proportional to 138,266.94, 207,480.90 and 58,299.89

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Solution

The fourth proportional to 138,266.94, 207,480.90 and 58,299.89 is: 87,483.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,266.94 : 207,480.90 = 58,299.89 : x
  2. Step 2: Convert to fraction form
    138,266.94/207,480.90 = 58,299.89/x
  3. Step 3: Cross multiply
    138,266.94x = 207,480.90 × 58,299.89
  4. Step 4: Simplify right side
    138,266.94x = 12,096,113,647.10
  5. Step 5: Solve for x
    x = 12,096,113,647.10/138,266.94
  6. Step 6: Final answer
    x = 87,483.77

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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.