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Finding the Fourth Proportional to 217,146.36, 325,639.48 and 74,955.48

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Solution

The fourth proportional to 217,146.36, 325,639.48 and 74,955.48 is: 112,405.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,146.36 : 325,639.48 = 74,955.48 : x
  2. Step 2: Convert to fraction form
    217,146.36/325,639.48 = 74,955.48/x
  3. Step 3: Cross multiply
    217,146.36x = 325,639.48 × 74,955.48
  4. Step 4: Simplify right side
    217,146.36x = 24,408,463,530.35
  5. Step 5: Solve for x
    x = 24,408,463,530.35/217,146.36
  6. Step 6: Final answer
    x = 112,405.58

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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.