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Finding the Fourth Proportional to 107,270.78, 148,040.70 and 61,950.67

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Solution

The fourth proportional to 107,270.78, 148,040.70 and 61,950.67 is: 85,495.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,270.78 : 148,040.70 = 61,950.67 : x
  2. Step 2: Convert to fraction form
    107,270.78/148,040.70 = 61,950.67/x
  3. Step 3: Cross multiply
    107,270.78x = 148,040.70 × 61,950.67
  4. Step 4: Simplify right side
    107,270.78x = 9,171,219,949.85
  5. Step 5: Solve for x
    x = 9,171,219,949.85/107,270.78
  6. Step 6: Final answer
    x = 85,495.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.