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Finding the Fourth Proportional to 717,874.62, 990,673.62 and 395,596.25

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Solution

The fourth proportional to 717,874.62, 990,673.62 and 395,596.25 is: 545,926.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,874.62 : 990,673.62 = 395,596.25 : x
  2. Step 2: Convert to fraction form
    717,874.62/990,673.62 = 395,596.25/x
  3. Step 3: Cross multiply
    717,874.62x = 990,673.62 × 395,596.25
  4. Step 4: Simplify right side
    717,874.62x = 391,906,769,045.93
  5. Step 5: Solve for x
    x = 391,906,769,045.93/717,874.62
  6. Step 6: Final answer
    x = 545,926.49

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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.