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Finding the Fourth Proportional to 388,555.14, 582,805.94 and 238,818.54

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Solution

The fourth proportional to 388,555.14, 582,805.94 and 238,818.54 is: 358,211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,555.14 : 582,805.94 = 238,818.54 : x
  2. Step 2: Convert to fraction form
    388,555.14/582,805.94 = 238,818.54/x
  3. Step 3: Cross multiply
    388,555.14x = 582,805.94 × 238,818.54
  4. Step 4: Simplify right side
    388,555.14x = 139,184,862,500.04
  5. Step 5: Solve for x
    x = 139,184,862,500.04/388,555.14
  6. Step 6: Final answer
    x = 358,211.35

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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.