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Finding the Fourth Proportional to 490,887.42, 677,486.33 and 276,025.94

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Solution

The fourth proportional to 490,887.42, 677,486.33 and 276,025.94 is: 380,950.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,887.42 : 677,486.33 = 276,025.94 : x
  2. Step 2: Convert to fraction form
    490,887.42/677,486.33 = 276,025.94/x
  3. Step 3: Cross multiply
    490,887.42x = 677,486.33 × 276,025.94
  4. Step 4: Simplify right side
    490,887.42x = 187,003,803,459.18
  5. Step 5: Solve for x
    x = 187,003,803,459.18/490,887.42
  6. Step 6: Final answer
    x = 380,950.49

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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.