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Finding the Fourth Proportional to 124,490.34, 171,795.60 and 67,900.50

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Solution

The fourth proportional to 124,490.34, 171,795.60 and 67,900.50 is: 93,702.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,490.34 : 171,795.60 = 67,900.50 : x
  2. Step 2: Convert to fraction form
    124,490.34/171,795.60 = 67,900.50/x
  3. Step 3: Cross multiply
    124,490.34x = 171,795.60 × 67,900.50
  4. Step 4: Simplify right side
    124,490.34x = 11,665,007,137.80
  5. Step 5: Solve for x
    x = 11,665,007,137.80/124,490.34
  6. Step 6: Final answer
    x = 93,702.11

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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.