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Finding the Fourth Proportional to 248,082.40, 342,349.68 and 134,908

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Solution

The fourth proportional to 248,082.40, 342,349.68 and 134,908 is: 186,170.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,082.40 : 342,349.68 = 134,908 : x
  2. Step 2: Convert to fraction form
    248,082.40/342,349.68 = 134,908/x
  3. Step 3: Cross multiply
    248,082.40x = 342,349.68 × 134,908
  4. Step 4: Simplify right side
    248,082.40x = 46,185,710,629.44
  5. Step 5: Solve for x
    x = 46,185,710,629.44/248,082.40
  6. Step 6: Final answer
    x = 186,170.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.