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Finding the Fourth Proportional to 621,553.84, 857,615.88 and 363,381.04

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Solution

The fourth proportional to 621,553.84, 857,615.88 and 363,381.04 is: 501,390.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,553.84 : 857,615.88 = 363,381.04 : x
  2. Step 2: Convert to fraction form
    621,553.84/857,615.88 = 363,381.04/x
  3. Step 3: Cross multiply
    621,553.84x = 857,615.88 × 363,381.04
  4. Step 4: Simplify right side
    621,553.84x = 311,641,350,394.92
  5. Step 5: Solve for x
    x = 311,641,350,394.92/621,553.84
  6. Step 6: Final answer
    x = 501,390.76

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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.