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Finding the Fourth Proportional to 693,794.98, 957,443.67 and 407,319.85

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Solution

The fourth proportional to 693,794.98, 957,443.67 and 407,319.85 is: 562,105.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,794.98 : 957,443.67 = 407,319.85 : x
  2. Step 2: Convert to fraction form
    693,794.98/957,443.67 = 407,319.85/x
  3. Step 3: Cross multiply
    693,794.98x = 957,443.67 × 407,319.85
  4. Step 4: Simplify right side
    693,794.98x = 389,985,812,047.85
  5. Step 5: Solve for x
    x = 389,985,812,047.85/693,794.98
  6. Step 6: Final answer
    x = 562,105.27

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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.