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Finding the Fourth Proportional to 388,384.44, 581,830.38 and 238,186.92

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Solution

The fourth proportional to 388,384.44, 581,830.38 and 238,186.92 is: 356,822.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,384.44 : 581,830.38 = 238,186.92 : x
  2. Step 2: Convert to fraction form
    388,384.44/581,830.38 = 238,186.92/x
  3. Step 3: Cross multiply
    388,384.44x = 581,830.38 × 238,186.92
  4. Step 4: Simplify right side
    388,384.44x = 138,584,386,174.63
  5. Step 5: Solve for x
    x = 138,584,386,174.63/388,384.44
  6. Step 6: Final answer
    x = 356,822.70

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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.