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Finding the Fourth Proportional to 543,866.64, 815,715.72 and 277,823.76

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Solution

The fourth proportional to 543,866.64, 815,715.72 and 277,823.76 is: 416,692.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,866.64 : 815,715.72 = 277,823.76 : x
  2. Step 2: Convert to fraction form
    543,866.64/815,715.72 = 277,823.76/x
  3. Step 3: Cross multiply
    543,866.64x = 815,715.72 × 277,823.76
  4. Step 4: Simplify right side
    543,866.64x = 226,625,208,421.51
  5. Step 5: Solve for x
    x = 226,625,208,421.51/543,866.64
  6. Step 6: Final answer
    x = 416,692.61

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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.