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Finding the Fourth Proportional to 670,407.23, 925,165.61 and 394,777.05

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Solution

The fourth proportional to 670,407.23, 925,165.61 and 394,777.05 is: 544,794.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,407.23 : 925,165.61 = 394,777.05 : x
  2. Step 2: Convert to fraction form
    670,407.23/925,165.61 = 394,777.05/x
  3. Step 3: Cross multiply
    670,407.23x = 925,165.61 × 394,777.05
  4. Step 4: Simplify right side
    670,407.23x = 365,234,148,303.37
  5. Step 5: Solve for x
    x = 365,234,148,303.37/670,407.23
  6. Step 6: Final answer
    x = 544,794.47

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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.