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Finding the Fourth Proportional to 647,995.80, 971,993.70 and 410,633.40

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Solution

The fourth proportional to 647,995.80, 971,993.70 and 410,633.40 is: 615,950.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,995.80 : 971,993.70 = 410,633.40 : x
  2. Step 2: Convert to fraction form
    647,995.80/971,993.70 = 410,633.40/x
  3. Step 3: Cross multiply
    647,995.80x = 971,993.70 × 410,633.40
  4. Step 4: Simplify right side
    647,995.80x = 399,133,077,809.58
  5. Step 5: Solve for x
    x = 399,133,077,809.58/647,995.80
  6. Step 6: Final answer
    x = 615,950.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.