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Finding the Fourth Proportional to 384,896.54, 531,135.77 and 212,804.54

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Solution

The fourth proportional to 384,896.54, 531,135.77 and 212,804.54 is: 293,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,896.54 : 531,135.77 = 212,804.54 : x
  2. Step 2: Convert to fraction form
    384,896.54/531,135.77 = 212,804.54/x
  3. Step 3: Cross multiply
    384,896.54x = 531,135.77 × 212,804.54
  4. Step 4: Simplify right side
    384,896.54x = 113,028,099,492.69
  5. Step 5: Solve for x
    x = 113,028,099,492.69/384,896.54
  6. Step 6: Final answer
    x = 293,658.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.