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Finding the Fourth Proportional to 136,817.70, 188,806.58 and 76,389.27

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Solution

The fourth proportional to 136,817.70, 188,806.58 and 76,389.27 is: 105,416.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,817.70 : 188,806.58 = 76,389.27 : x
  2. Step 2: Convert to fraction form
    136,817.70/188,806.58 = 76,389.27/x
  3. Step 3: Cross multiply
    136,817.70x = 188,806.58 × 76,389.27
  4. Step 4: Simplify right side
    136,817.70x = 14,422,795,873.36
  5. Step 5: Solve for x
    x = 14,422,795,873.36/136,817.70
  6. Step 6: Final answer
    x = 105,416.16

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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.