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Finding the Fourth Proportional to 188,405.60, 259,999.68 and 103,528.16

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Solution

The fourth proportional to 188,405.60, 259,999.68 and 103,528.16 is: 142,868.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,405.60 : 259,999.68 = 103,528.16 : x
  2. Step 2: Convert to fraction form
    188,405.60/259,999.68 = 103,528.16/x
  3. Step 3: Cross multiply
    188,405.60x = 259,999.68 × 103,528.16
  4. Step 4: Simplify right side
    188,405.60x = 26,917,288,470.99
  5. Step 5: Solve for x
    x = 26,917,288,470.99/188,405.60
  6. Step 6: Final answer
    x = 142,868.83

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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.