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Finding the Fourth Proportional to 384,087.60, 529,987.92 and 214,288.80

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Solution

The fourth proportional to 384,087.60, 529,987.92 and 214,288.80 is: 295,688.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,087.60 : 529,987.92 = 214,288.80 : x
  2. Step 2: Convert to fraction form
    384,087.60/529,987.92 = 214,288.80/x
  3. Step 3: Cross multiply
    384,087.60x = 529,987.92 × 214,288.80
  4. Step 4: Simplify right side
    384,087.60x = 113,570,475,391.30
  5. Step 5: Solve for x
    x = 113,570,475,391.30/384,087.60
  6. Step 6: Final answer
    x = 295,688.99

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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.