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Finding the Fourth Proportional to 186,186.90, 279,246.79 and 79,630.80

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Solution

The fourth proportional to 186,186.90, 279,246.79 and 79,630.80 is: 119,431.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,186.90 : 279,246.79 = 79,630.80 : x
  2. Step 2: Convert to fraction form
    186,186.90/279,246.79 = 79,630.80/x
  3. Step 3: Cross multiply
    186,186.90x = 279,246.79 × 79,630.80
  4. Step 4: Simplify right side
    186,186.90x = 22,236,644,337.50
  5. Step 5: Solve for x
    x = 22,236,644,337.50/186,186.90
  6. Step 6: Final answer
    x = 119,431.84

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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.