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Finding the Fourth Proportional to 621,884.61, 858,190.70 and 349,952.34

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Solution

The fourth proportional to 621,884.61, 858,190.70 and 349,952.34 is: 482,928.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,884.61 : 858,190.70 = 349,952.34 : x
  2. Step 2: Convert to fraction form
    621,884.61/858,190.70 = 349,952.34/x
  3. Step 3: Cross multiply
    621,884.61x = 858,190.70 × 349,952.34
  4. Step 4: Simplify right side
    621,884.61x = 300,325,841,881.48
  5. Step 5: Solve for x
    x = 300,325,841,881.48/621,884.61
  6. Step 6: Final answer
    x = 482,928.56

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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.