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Finding the Fourth Proportional to 519,360.96, 716,720.09 and 289,914.15

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Solution

The fourth proportional to 519,360.96, 716,720.09 and 289,914.15 is: 400,082.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,360.96 : 716,720.09 = 289,914.15 : x
  2. Step 2: Convert to fraction form
    519,360.96/716,720.09 = 289,914.15/x
  3. Step 3: Cross multiply
    519,360.96x = 716,720.09 × 289,914.15
  4. Step 4: Simplify right side
    519,360.96x = 207,787,294,230.70
  5. Step 5: Solve for x
    x = 207,787,294,230.70/519,360.96
  6. Step 6: Final answer
    x = 400,082.62

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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.