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Finding the Fourth Proportional to 198,693.40, 298,040.10 and 189,477.40

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Solution

The fourth proportional to 198,693.40, 298,040.10 and 189,477.40 is: 284,216.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,693.40 : 298,040.10 = 189,477.40 : x
  2. Step 2: Convert to fraction form
    198,693.40/298,040.10 = 189,477.40/x
  3. Step 3: Cross multiply
    198,693.40x = 298,040.10 × 189,477.40
  4. Step 4: Simplify right side
    198,693.40x = 56,471,863,243.74
  5. Step 5: Solve for x
    x = 56,471,863,243.74/198,693.40
  6. Step 6: Final answer
    x = 284,216.10

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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.