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Finding the Fourth Proportional to 623,558.76, 859,937.22 and 408,620.76

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Solution

The fourth proportional to 623,558.76, 859,937.22 and 408,620.76 is: 563,520.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,558.76 : 859,937.22 = 408,620.76 : x
  2. Step 2: Convert to fraction form
    623,558.76/859,937.22 = 408,620.76/x
  3. Step 3: Cross multiply
    623,558.76x = 859,937.22 × 408,620.76
  4. Step 4: Simplify right side
    623,558.76x = 351,388,200,388.69
  5. Step 5: Solve for x
    x = 351,388,200,388.69/623,558.76
  6. Step 6: Final answer
    x = 563,520.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.