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Finding the Fourth Proportional to 619,486.40, 929,229.60 and 245,460.80

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Solution

The fourth proportional to 619,486.40, 929,229.60 and 245,460.80 is: 368,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,486.40 : 929,229.60 = 245,460.80 : x
  2. Step 2: Convert to fraction form
    619,486.40/929,229.60 = 245,460.80/x
  3. Step 3: Cross multiply
    619,486.40x = 929,229.60 × 245,460.80
  4. Step 4: Simplify right side
    619,486.40x = 228,089,440,999.68
  5. Step 5: Solve for x
    x = 228,089,440,999.68/619,486.40
  6. Step 6: Final answer
    x = 368,191.20

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Similar ratio
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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.