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Finding the Fourth Proportional to 186,393.88, 279,389.70 and 91,513.72

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Solution

The fourth proportional to 186,393.88, 279,389.70 and 91,513.72 is: 137,171.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,393.88 : 279,389.70 = 91,513.72 : x
  2. Step 2: Convert to fraction form
    186,393.88/279,389.70 = 91,513.72/x
  3. Step 3: Cross multiply
    186,393.88x = 279,389.70 × 91,513.72
  4. Step 4: Simplify right side
    186,393.88x = 25,567,990,776.68
  5. Step 5: Solve for x
    x = 25,567,990,776.68/186,393.88
  6. Step 6: Final answer
    x = 137,171.84

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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.