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Finding the Fourth Proportional to 54,829.40, 82,246.80 and 28,585.40

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Solution

The fourth proportional to 54,829.40, 82,246.80 and 28,585.40 is: 42,879.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,829.40 : 82,246.80 = 28,585.40 : x
  2. Step 2: Convert to fraction form
    54,829.40/82,246.80 = 28,585.40/x
  3. Step 3: Cross multiply
    54,829.40x = 82,246.80 × 28,585.40
  4. Step 4: Simplify right side
    54,829.40x = 2,351,057,676.72
  5. Step 5: Solve for x
    x = 2,351,057,676.72/54,829.40
  6. Step 6: Final answer
    x = 42,879.51

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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.