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Finding the Fourth Proportional to 193,216.60, 289,968.90 and 99,674.20

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Solution

The fourth proportional to 193,216.60, 289,968.90 and 99,674.20 is: 149,585.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,216.60 : 289,968.90 = 99,674.20 : x
  2. Step 2: Convert to fraction form
    193,216.60/289,968.90 = 99,674.20/x
  3. Step 3: Cross multiply
    193,216.60x = 289,968.90 × 99,674.20
  4. Step 4: Simplify right side
    193,216.60x = 28,902,418,132.38
  5. Step 5: Solve for x
    x = 28,902,418,132.38/193,216.60
  6. Step 6: Final answer
    x = 149,585.58

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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.