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Finding the Fourth Proportional to 353,911.20, 531,903.60 and 347,690.40

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Solution

The fourth proportional to 353,911.20, 531,903.60 and 347,690.40 is: 522,554.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,911.20 : 531,903.60 = 347,690.40 : x
  2. Step 2: Convert to fraction form
    353,911.20/531,903.60 = 347,690.40/x
  3. Step 3: Cross multiply
    353,911.20x = 531,903.60 × 347,690.40
  4. Step 4: Simplify right side
    353,911.20x = 184,937,775,445.44
  5. Step 5: Solve for x
    x = 184,937,775,445.44/353,911.20
  6. Step 6: Final answer
    x = 522,554.18

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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.