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Finding the Fourth Proportional to 193,230.40, 289,701.60 and 99,803.20

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Solution

The fourth proportional to 193,230.40, 289,701.60 and 99,803.20 is: 149,630.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,230.40 : 289,701.60 = 99,803.20 : x
  2. Step 2: Convert to fraction form
    193,230.40/289,701.60 = 99,803.20/x
  3. Step 3: Cross multiply
    193,230.40x = 289,701.60 × 99,803.20
  4. Step 4: Simplify right side
    193,230.40x = 28,913,146,725.12
  5. Step 5: Solve for x
    x = 28,913,146,725.12/193,230.40
  6. Step 6: Final answer
    x = 149,630.42

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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.