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Finding the Fourth Proportional to 621,161.28, 857,740.32 and 589,274.64

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Solution

The fourth proportional to 621,161.28, 857,740.32 and 589,274.64 is: 813,709.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,161.28 : 857,740.32 = 589,274.64 : x
  2. Step 2: Convert to fraction form
    621,161.28/857,740.32 = 589,274.64/x
  3. Step 3: Cross multiply
    621,161.28x = 857,740.32 × 589,274.64
  4. Step 4: Simplify right side
    621,161.28x = 505,444,618,281.49
  5. Step 5: Solve for x
    x = 505,444,618,281.49/621,161.28
  6. Step 6: Final answer
    x = 813,709.15

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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.