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Finding the Fourth Proportional to 383,259.94, 528,898.62 and 211,180.30

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Solution

The fourth proportional to 383,259.94, 528,898.62 and 211,180.30 is: 291,428.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,259.94 : 528,898.62 = 211,180.30 : x
  2. Step 2: Convert to fraction form
    383,259.94/528,898.62 = 211,180.30/x
  3. Step 3: Cross multiply
    383,259.94x = 528,898.62 × 211,180.30
  4. Step 4: Simplify right side
    383,259.94x = 111,692,969,241.19
  5. Step 5: Solve for x
    x = 111,692,969,241.19/383,259.94
  6. Step 6: Final answer
    x = 291,428.76

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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.