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Finding the Fourth Proportional to 621,598.77, 857,797.36 and 345,954.75

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Solution

The fourth proportional to 621,598.77, 857,797.36 and 345,954.75 is: 477,412.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,598.77 : 857,797.36 = 345,954.75 : x
  2. Step 2: Convert to fraction form
    621,598.77/857,797.36 = 345,954.75/x
  3. Step 3: Cross multiply
    621,598.77x = 857,797.36 × 345,954.75
  4. Step 4: Simplify right side
    621,598.77x = 296,759,072,211.20
  5. Step 5: Solve for x
    x = 296,759,072,211.20/621,598.77
  6. Step 6: Final answer
    x = 477,412.58

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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.