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Finding the Fourth Proportional to 696,205.69, 960,763.86 and 394,399.69

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Solution

The fourth proportional to 696,205.69, 960,763.86 and 394,399.69 is: 544,271.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,205.69 : 960,763.86 = 394,399.69 : x
  2. Step 2: Convert to fraction form
    696,205.69/960,763.86 = 394,399.69/x
  3. Step 3: Cross multiply
    696,205.69x = 960,763.86 × 394,399.69
  4. Step 4: Simplify right side
    696,205.69x = 378,924,966,145.29
  5. Step 5: Solve for x
    x = 378,924,966,145.29/696,205.69
  6. Step 6: Final answer
    x = 544,271.58

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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.