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Finding the Fourth Proportional to 19,245.40, 28,870.80 and 6,096.40

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Solution

The fourth proportional to 19,245.40, 28,870.80 and 6,096.40 is: 9,145.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,245.40 : 28,870.80 = 6,096.40 : x
  2. Step 2: Convert to fraction form
    19,245.40/28,870.80 = 6,096.40/x
  3. Step 3: Cross multiply
    19,245.40x = 28,870.80 × 6,096.40
  4. Step 4: Simplify right side
    19,245.40x = 176,007,945.12
  5. Step 5: Solve for x
    x = 176,007,945.12/19,245.40
  6. Step 6: Final answer
    x = 9,145.46

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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.