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Finding the Fourth Proportional to 492,193.20, 738,289.80 and 243,361.20

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Solution

The fourth proportional to 492,193.20, 738,289.80 and 243,361.20 is: 365,041.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,193.20 : 738,289.80 = 243,361.20 : x
  2. Step 2: Convert to fraction form
    492,193.20/738,289.80 = 243,361.20/x
  3. Step 3: Cross multiply
    492,193.20x = 738,289.80 × 243,361.20
  4. Step 4: Simplify right side
    492,193.20x = 179,671,091,675.76
  5. Step 5: Solve for x
    x = 179,671,091,675.76/492,193.20
  6. Step 6: Final answer
    x = 365,041.80

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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.