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Finding the Fourth Proportional to 257,936.40, 386,321.40 and 152,960.40

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Solution

The fourth proportional to 257,936.40, 386,321.40 and 152,960.40 is: 229,094.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,936.40 : 386,321.40 = 152,960.40 : x
  2. Step 2: Convert to fraction form
    257,936.40/386,321.40 = 152,960.40/x
  3. Step 3: Cross multiply
    257,936.40x = 386,321.40 × 152,960.40
  4. Step 4: Simplify right side
    257,936.40x = 59,091,875,872.56
  5. Step 5: Solve for x
    x = 59,091,875,872.56/257,936.40
  6. Step 6: Final answer
    x = 229,094.75

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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.