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Finding the Fourth Proportional to 228,902.10, 343,353.15 and 191,504.40

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Solution

The fourth proportional to 228,902.10, 343,353.15 and 191,504.40 is: 287,256.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,902.10 : 343,353.15 = 191,504.40 : x
  2. Step 2: Convert to fraction form
    228,902.10/343,353.15 = 191,504.40/x
  3. Step 3: Cross multiply
    228,902.10x = 343,353.15 × 191,504.40
  4. Step 4: Simplify right side
    228,902.10x = 65,753,638,978.86
  5. Step 5: Solve for x
    x = 65,753,638,978.86/228,902.10
  6. Step 6: Final answer
    x = 287,256.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.