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Finding the Fourth Proportional to 213,066.05, 319,586.58 and 79,935.19

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Solution

The fourth proportional to 213,066.05, 319,586.58 and 79,935.19 is: 119,898.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,066.05 : 319,586.58 = 79,935.19 : x
  2. Step 2: Convert to fraction form
    213,066.05/319,586.58 = 79,935.19/x
  3. Step 3: Cross multiply
    213,066.05x = 319,586.58 × 79,935.19
  4. Step 4: Simplify right side
    213,066.05x = 25,546,213,194.78
  5. Step 5: Solve for x
    x = 25,546,213,194.78/213,066.05
  6. Step 6: Final answer
    x = 119,898.10

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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.