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Finding the Fourth Proportional to 212,768.61, 319,199.62 and 63,020.62

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Solution

The fourth proportional to 212,768.61, 319,199.62 and 63,020.62 is: 94,544.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,768.61 : 319,199.62 = 63,020.62 : x
  2. Step 2: Convert to fraction form
    212,768.61/319,199.62 = 63,020.62/x
  3. Step 3: Cross multiply
    212,768.61x = 319,199.62 × 63,020.62
  4. Step 4: Simplify right side
    212,768.61x = 20,116,157,956.16
  5. Step 5: Solve for x
    x = 20,116,157,956.16/212,768.61
  6. Step 6: Final answer
    x = 94,544.76

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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.