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Finding the Fourth Proportional to 543,868.64, 815,718.72 and 277,825.76

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Solution

The fourth proportional to 543,868.64, 815,718.72 and 277,825.76 is: 416,695.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,868.64 : 815,718.72 = 277,825.76 : x
  2. Step 2: Convert to fraction form
    543,868.64/815,718.72 = 277,825.76/x
  3. Step 3: Cross multiply
    543,868.64x = 815,718.72 × 277,825.76
  4. Step 4: Simplify right side
    543,868.64x = 226,627,673,330.23
  5. Step 5: Solve for x
    x = 226,627,673,330.23/543,868.64
  6. Step 6: Final answer
    x = 416,695.61

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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.