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Finding the Fourth Proportional to 670,683.74, 925,651.38 and 395,086.10

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Solution

The fourth proportional to 670,683.74, 925,651.38 and 395,086.10 is: 545,282.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,683.74 : 925,651.38 = 395,086.10 : x
  2. Step 2: Convert to fraction form
    670,683.74/925,651.38 = 395,086.10/x
  3. Step 3: Cross multiply
    670,683.74x = 925,651.38 × 395,086.10
  4. Step 4: Simplify right side
    670,683.74x = 365,711,993,683.82
  5. Step 5: Solve for x
    x = 365,711,993,683.82/670,683.74
  6. Step 6: Final answer
    x = 545,282.33

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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.