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Finding the Fourth Proportional to 615,136.20, 922,617.90 and 194,454.60

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Solution

The fourth proportional to 615,136.20, 922,617.90 and 194,454.60 is: 291,654.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,136.20 : 922,617.90 = 194,454.60 : x
  2. Step 2: Convert to fraction form
    615,136.20/922,617.90 = 194,454.60/x
  3. Step 3: Cross multiply
    615,136.20x = 922,617.90 × 194,454.60
  4. Step 4: Simplify right side
    615,136.20x = 179,407,294,697.34
  5. Step 5: Solve for x
    x = 179,407,294,697.34/615,136.20
  6. Step 6: Final answer
    x = 291,654.59

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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.