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Finding the Fourth Proportional to 552,620.70, 829,368.45 and 215,822.70

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Solution

The fourth proportional to 552,620.70, 829,368.45 and 215,822.70 is: 323,904.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,620.70 : 829,368.45 = 215,822.70 : x
  2. Step 2: Convert to fraction form
    552,620.70/829,368.45 = 215,822.70/x
  3. Step 3: Cross multiply
    552,620.70x = 829,368.45 × 215,822.70
  4. Step 4: Simplify right side
    552,620.70x = 178,996,538,173.82
  5. Step 5: Solve for x
    x = 178,996,538,173.82/552,620.70
  6. Step 6: Final answer
    x = 323,904.87

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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.