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Finding the Fourth Proportional to 615,913.20, 923,783.40 and 195,231.60

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Solution

The fourth proportional to 615,913.20, 923,783.40 and 195,231.60 is: 292,820.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,913.20 : 923,783.40 = 195,231.60 : x
  2. Step 2: Convert to fraction form
    615,913.20/923,783.40 = 195,231.60/x
  3. Step 3: Cross multiply
    615,913.20x = 923,783.40 × 195,231.60
  4. Step 4: Simplify right side
    615,913.20x = 180,351,711,235.44
  5. Step 5: Solve for x
    x = 180,351,711,235.44/615,913.20
  6. Step 6: Final answer
    x = 292,820.01

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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.