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Finding the Fourth Proportional to 493,582.20, 689,615.40 and 493,582.20

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Solution

The fourth proportional to 493,582.20, 689,615.40 and 493,582.20 is: 689,615.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,582.20 : 689,615.40 = 493,582.20 : x
  2. Step 2: Convert to fraction form
    493,582.20/689,615.40 = 493,582.20/x
  3. Step 3: Cross multiply
    493,582.20x = 689,615.40 × 493,582.20
  4. Step 4: Simplify right side
    493,582.20x = 340,381,886,285.88
  5. Step 5: Solve for x
    x = 340,381,886,285.88/493,582.20
  6. Step 6: Final answer
    x = 689,615.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.