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Finding the Fourth Proportional to 410,991.25, 616,486.88 and 115,503.25

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Solution

The fourth proportional to 410,991.25, 616,486.88 and 115,503.25 is: 173,254.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,991.25 : 616,486.88 = 115,503.25 : x
  2. Step 2: Convert to fraction form
    410,991.25/616,486.88 = 115,503.25/x
  3. Step 3: Cross multiply
    410,991.25x = 616,486.88 × 115,503.25
  4. Step 4: Simplify right side
    410,991.25x = 71,206,238,222.36
  5. Step 5: Solve for x
    x = 71,206,238,222.36/410,991.25
  6. Step 6: Final answer
    x = 173,254.88

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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.