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Finding the Fourth Proportional to 157,617.86, 217,511.58 and 89,634.86

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Solution

The fourth proportional to 157,617.86, 217,511.58 and 89,634.86 is: 123,695.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,617.86 : 217,511.58 = 89,634.86 : x
  2. Step 2: Convert to fraction form
    157,617.86/217,511.58 = 89,634.86/x
  3. Step 3: Cross multiply
    157,617.86x = 217,511.58 × 89,634.86
  4. Step 4: Simplify right side
    157,617.86x = 19,496,620,021.68
  5. Step 5: Solve for x
    x = 19,496,620,021.68/157,617.86
  6. Step 6: Final answer
    x = 123,695.50

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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.