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Finding the Fourth Proportional to 621,555.84, 857,618.64 and 363,383.04

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Solution

The fourth proportional to 621,555.84, 857,618.64 and 363,383.04 is: 501,393.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,555.84 : 857,618.64 = 363,383.04 : x
  2. Step 2: Convert to fraction form
    621,555.84/857,618.64 = 363,383.04/x
  3. Step 3: Cross multiply
    621,555.84x = 857,618.64 × 363,383.04
  4. Step 4: Simplify right side
    621,555.84x = 311,644,068,563.87
  5. Step 5: Solve for x
    x = 311,644,068,563.87/621,555.84
  6. Step 6: Final answer
    x = 501,393.52

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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.