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Finding the Fourth Proportional to 388,816.25, 583,224.38 and 93,328.25

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Solution

The fourth proportional to 388,816.25, 583,224.38 and 93,328.25 is: 139,992.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,816.25 : 583,224.38 = 93,328.25 : x
  2. Step 2: Convert to fraction form
    388,816.25/583,224.38 = 93,328.25/x
  3. Step 3: Cross multiply
    388,816.25x = 583,224.38 × 93,328.25
  4. Step 4: Simplify right side
    388,816.25x = 54,431,310,742.74
  5. Step 5: Solve for x
    x = 54,431,310,742.74/388,816.25
  6. Step 6: Final answer
    x = 139,992.38

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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.