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Finding the Fourth Proportional to 519,226.67, 716,568.80 and 289,828.60

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Solution

The fourth proportional to 519,226.67, 716,568.80 and 289,828.60 is: 399,983.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,226.67 : 716,568.80 = 289,828.60 : x
  2. Step 2: Convert to fraction form
    519,226.67/716,568.80 = 289,828.60/x
  3. Step 3: Cross multiply
    519,226.67x = 716,568.80 × 289,828.60
  4. Step 4: Simplify right side
    519,226.67x = 207,682,128,867.12
  5. Step 5: Solve for x
    x = 207,682,128,867.12/519,226.67
  6. Step 6: Final answer
    x = 399,983.55

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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.