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Finding the Fourth Proportional to 570,719.54, 787,601.22 and 328,997.72

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Solution

The fourth proportional to 570,719.54, 787,601.22 and 328,997.72 is: 454,021.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,719.54 : 787,601.22 = 328,997.72 : x
  2. Step 2: Convert to fraction form
    570,719.54/787,601.22 = 328,997.72/x
  3. Step 3: Cross multiply
    570,719.54x = 787,601.22 × 328,997.72
  4. Step 4: Simplify right side
    570,719.54x = 259,119,005,649.22
  5. Step 5: Solve for x
    x = 259,119,005,649.22/570,719.54
  6. Step 6: Final answer
    x = 454,021.61

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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.