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Finding the Fourth Proportional to 186,188.90, 279,249.79 and 79,632.80

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Solution

The fourth proportional to 186,188.90, 279,249.79 and 79,632.80 is: 119,434.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,188.90 : 279,249.79 = 79,632.80 : x
  2. Step 2: Convert to fraction form
    186,188.90/279,249.79 = 79,632.80/x
  3. Step 3: Cross multiply
    186,188.90x = 279,249.79 × 79,632.80
  4. Step 4: Simplify right side
    186,188.90x = 22,237,442,677.11
  5. Step 5: Solve for x
    x = 22,237,442,677.11/186,188.90
  6. Step 6: Final answer
    x = 119,434.85

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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.