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Finding the Fourth Proportional to 645,767.55, 968,651.46 and 196,448.40

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Solution

The fourth proportional to 645,767.55, 968,651.46 and 196,448.40 is: 294,672.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,767.55 : 968,651.46 = 196,448.40 : x
  2. Step 2: Convert to fraction form
    645,767.55/968,651.46 = 196,448.40/x
  3. Step 3: Cross multiply
    645,767.55x = 968,651.46 × 196,448.40
  4. Step 4: Simplify right side
    645,767.55x = 190,290,029,474.66
  5. Step 5: Solve for x
    x = 190,290,029,474.66/645,767.55
  6. Step 6: Final answer
    x = 294,672.64

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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.