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Finding the Fourth Proportional to 212,036.16, 318,066.16 and 67,954.52

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Solution

The fourth proportional to 212,036.16, 318,066.16 and 67,954.52 is: 101,935.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,036.16 : 318,066.16 = 67,954.52 : x
  2. Step 2: Convert to fraction form
    212,036.16/318,066.16 = 67,954.52/x
  3. Step 3: Cross multiply
    212,036.16x = 318,066.16 × 67,954.52
  4. Step 4: Simplify right side
    212,036.16x = 21,614,033,231.04
  5. Step 5: Solve for x
    x = 21,614,033,231.04/212,036.16
  6. Step 6: Final answer
    x = 101,935.60

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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.