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Finding the Fourth Proportional to 439,518.37, 605,449.62 and 374,776.78

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Solution

The fourth proportional to 439,518.37, 605,449.62 and 374,776.78 is: 516,266.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,518.37 : 605,449.62 = 374,776.78 : x
  2. Step 2: Convert to fraction form
    439,518.37/605,449.62 = 374,776.78/x
  3. Step 3: Cross multiply
    439,518.37x = 605,449.62 × 374,776.78
  4. Step 4: Simplify right side
    439,518.37x = 226,908,459,035.82
  5. Step 5: Solve for x
    x = 226,908,459,035.82/439,518.37
  6. Step 6: Final answer
    x = 516,266.16

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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.