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Finding the Fourth Proportional to 348,879.60, 523,319.40 and 127,234.80

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Solution

The fourth proportional to 348,879.60, 523,319.40 and 127,234.80 is: 190,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,879.60 : 523,319.40 = 127,234.80 : x
  2. Step 2: Convert to fraction form
    348,879.60/523,319.40 = 127,234.80/x
  3. Step 3: Cross multiply
    348,879.60x = 523,319.40 × 127,234.80
  4. Step 4: Simplify right side
    348,879.60x = 66,584,439,195.12
  5. Step 5: Solve for x
    x = 66,584,439,195.12/348,879.60
  6. Step 6: Final answer
    x = 190,852.20

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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.