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Finding the Fourth Proportional to 393,285.60, 590,014.80 and 127,000.80

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Solution

The fourth proportional to 393,285.60, 590,014.80 and 127,000.80 is: 190,529.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,285.60 : 590,014.80 = 127,000.80 : x
  2. Step 2: Convert to fraction form
    393,285.60/590,014.80 = 127,000.80/x
  3. Step 3: Cross multiply
    393,285.60x = 590,014.80 × 127,000.80
  4. Step 4: Simplify right side
    393,285.60x = 74,932,351,611.84
  5. Step 5: Solve for x
    x = 74,932,351,611.84/393,285.60
  6. Step 6: Final answer
    x = 190,529.10

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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.