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Finding the Fourth Proportional to 248,921.40, 373,382.10 and 82,709.40

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Solution

The fourth proportional to 248,921.40, 373,382.10 and 82,709.40 is: 124,064.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,921.40 : 373,382.10 = 82,709.40 : x
  2. Step 2: Convert to fraction form
    248,921.40/373,382.10 = 82,709.40/x
  3. Step 3: Cross multiply
    248,921.40x = 373,382.10 × 82,709.40
  4. Step 4: Simplify right side
    248,921.40x = 30,882,209,461.74
  5. Step 5: Solve for x
    x = 30,882,209,461.74/248,921.40
  6. Step 6: Final answer
    x = 124,064.10

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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.