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Finding the Fourth Proportional to 388,108, 581,846.64 and 174,719.20

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Solution

The fourth proportional to 388,108, 581,846.64 and 174,719.20 is: 261,936.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,108 : 581,846.64 = 174,719.20 : x
  2. Step 2: Convert to fraction form
    388,108/581,846.64 = 174,719.20/x
  3. Step 3: Cross multiply
    388,108x = 581,846.64 × 174,719.20
  4. Step 4: Simplify right side
    388,108x = 101,659,779,463.49
  5. Step 5: Solve for x
    x = 101,659,779,463.49/388,108
  6. Step 6: Final answer
    x = 261,936.83

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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.