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Finding the Fourth Proportional to 400,893.40, 552,789.57 and 255,468.84

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Solution

The fourth proportional to 400,893.40, 552,789.57 and 255,468.84 is: 352,264.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,893.40 : 552,789.57 = 255,468.84 : x
  2. Step 2: Convert to fraction form
    400,893.40/552,789.57 = 255,468.84/x
  3. Step 3: Cross multiply
    400,893.40x = 552,789.57 × 255,468.84
  4. Step 4: Simplify right side
    400,893.40x = 141,220,510,212.00
  5. Step 5: Solve for x
    x = 141,220,510,212.00/400,893.40
  6. Step 6: Final answer
    x = 352,264.49

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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.