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Finding the Fourth Proportional to 640,903.89, 961,451.55 and 236,065.35

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Solution

The fourth proportional to 640,903.89, 961,451.55 and 236,065.35 is: 354,133.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,903.89 : 961,451.55 = 236,065.35 : x
  2. Step 2: Convert to fraction form
    640,903.89/961,451.55 = 236,065.35/x
  3. Step 3: Cross multiply
    640,903.89x = 961,451.55 × 236,065.35
  4. Step 4: Simplify right side
    640,903.89x = 226,965,396,658.79
  5. Step 5: Solve for x
    x = 226,965,396,658.79/640,903.89
  6. Step 6: Final answer
    x = 354,133.28

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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.