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Finding the Fourth Proportional to 147,656.25, 203,763.80 and 83,993.90

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Solution

The fourth proportional to 147,656.25, 203,763.80 and 83,993.90 is: 115,910.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,656.25 : 203,763.80 = 83,993.90 : x
  2. Step 2: Convert to fraction form
    147,656.25/203,763.80 = 83,993.90/x
  3. Step 3: Cross multiply
    147,656.25x = 203,763.80 × 83,993.90
  4. Step 4: Simplify right side
    147,656.25x = 17,114,915,431.99
  5. Step 5: Solve for x
    x = 17,114,915,431.99/147,656.25
  6. Step 6: Final answer
    x = 115,910.54

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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.