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Finding the Fourth Proportional to 543,571.75, 815,502.35 and 188,585.20

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Solution

The fourth proportional to 543,571.75, 815,502.35 and 188,585.20 is: 282,928.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,571.75 : 815,502.35 = 188,585.20 : x
  2. Step 2: Convert to fraction form
    543,571.75/815,502.35 = 188,585.20/x
  3. Step 3: Cross multiply
    543,571.75x = 815,502.35 × 188,585.20
  4. Step 4: Simplify right side
    543,571.75x = 153,791,673,775.22
  5. Step 5: Solve for x
    x = 153,791,673,775.22/543,571.75
  6. Step 6: Final answer
    x = 282,928.01

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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.