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Finding the Fourth Proportional to 653,281.20, 978,609.60 and 453,826.80

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Solution

The fourth proportional to 653,281.20, 978,609.60 and 453,826.80 is: 679,828.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,281.20 : 978,609.60 = 453,826.80 : x
  2. Step 2: Convert to fraction form
    653,281.20/978,609.60 = 453,826.80/x
  3. Step 3: Cross multiply
    653,281.20x = 978,609.60 × 453,826.80
  4. Step 4: Simplify right side
    653,281.20x = 444,119,263,217.28
  5. Step 5: Solve for x
    x = 444,119,263,217.28/653,281.20
  6. Step 6: Final answer
    x = 679,828.63

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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.