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Finding the Fourth Proportional to 385,943.70, 532,602.30 and 235,040.70

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Solution

The fourth proportional to 385,943.70, 532,602.30 and 235,040.70 is: 324,356.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,943.70 : 532,602.30 = 235,040.70 : x
  2. Step 2: Convert to fraction form
    385,943.70/532,602.30 = 235,040.70/x
  3. Step 3: Cross multiply
    385,943.70x = 532,602.30 × 235,040.70
  4. Step 4: Simplify right side
    385,943.70x = 125,183,217,413.61
  5. Step 5: Solve for x
    x = 125,183,217,413.61/385,943.70
  6. Step 6: Final answer
    x = 324,356.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.