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Finding the Fourth Proportional to 684,997.65, 945,295.43 and 383,191.65

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Solution

The fourth proportional to 684,997.65, 945,295.43 and 383,191.65 is: 528,803.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,997.65 : 945,295.43 = 383,191.65 : x
  2. Step 2: Convert to fraction form
    684,997.65/945,295.43 = 383,191.65/x
  3. Step 3: Cross multiply
    684,997.65x = 945,295.43 × 383,191.65
  4. Step 4: Simplify right side
    684,997.65x = 362,229,313,643.20
  5. Step 5: Solve for x
    x = 362,229,313,643.20/684,997.65
  6. Step 6: Final answer
    x = 528,803.73

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Double scale
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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.