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Finding the Fourth Proportional to 308,909.72, 463,402.74 and 109,188.92

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Solution

The fourth proportional to 308,909.72, 463,402.74 and 109,188.92 is: 163,796.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,909.72 : 463,402.74 = 109,188.92 : x
  2. Step 2: Convert to fraction form
    308,909.72/463,402.74 = 109,188.92/x
  3. Step 3: Cross multiply
    308,909.72x = 463,402.74 × 109,188.92
  4. Step 4: Simplify right side
    308,909.72x = 50,598,444,705.64
  5. Step 5: Solve for x
    x = 50,598,444,705.64/308,909.72
  6. Step 6: Final answer
    x = 163,796.87

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1.5x scale

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.