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Finding the Fourth Proportional to 325,666.80, 488,557.80 and 115,426.80

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Solution

The fourth proportional to 325,666.80, 488,557.80 and 115,426.80 is: 173,160.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,666.80 : 488,557.80 = 115,426.80 : x
  2. Step 2: Convert to fraction form
    325,666.80/488,557.80 = 115,426.80/x
  3. Step 3: Cross multiply
    325,666.80x = 488,557.80 × 115,426.80
  4. Step 4: Simplify right side
    325,666.80x = 56,392,663,469.04
  5. Step 5: Solve for x
    x = 56,392,663,469.04/325,666.80
  6. Step 6: Final answer
    x = 173,160.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.