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Finding the Fourth Proportional to 124,363.14, 171,621.15 and 67,774.50

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Solution

The fourth proportional to 124,363.14, 171,621.15 and 67,774.50 is: 93,528.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,363.14 : 171,621.15 = 67,774.50 : x
  2. Step 2: Convert to fraction form
    124,363.14/171,621.15 = 67,774.50/x
  3. Step 3: Cross multiply
    124,363.14x = 171,621.15 × 67,774.50
  4. Step 4: Simplify right side
    124,363.14x = 11,631,537,630.68
  5. Step 5: Solve for x
    x = 11,631,537,630.68/124,363.14
  6. Step 6: Final answer
    x = 93,528.82

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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.