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Finding the Fourth Proportional to 124,141.86, 171,285.90 and 73,156.68

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Solution

The fourth proportional to 124,141.86, 171,285.90 and 73,156.68 is: 100,938.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,141.86 : 171,285.90 = 73,156.68 : x
  2. Step 2: Convert to fraction form
    124,141.86/171,285.90 = 73,156.68/x
  3. Step 3: Cross multiply
    124,141.86x = 171,285.90 × 73,156.68
  4. Step 4: Simplify right side
    124,141.86x = 12,530,707,774.81
  5. Step 5: Solve for x
    x = 12,530,707,774.81/124,141.86
  6. Step 6: Final answer
    x = 100,938.62

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1.5x scale

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.