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Finding the Fourth Proportional to 483,119.96, 724,679.94 and 128,161.76

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Solution

The fourth proportional to 483,119.96, 724,679.94 and 128,161.76 is: 192,242.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,119.96 : 724,679.94 = 128,161.76 : x
  2. Step 2: Convert to fraction form
    483,119.96/724,679.94 = 128,161.76/x
  3. Step 3: Cross multiply
    483,119.96x = 724,679.94 × 128,161.76
  4. Step 4: Simplify right side
    483,119.96x = 92,876,256,547.09
  5. Step 5: Solve for x
    x = 92,876,256,547.09/483,119.96
  6. Step 6: Final answer
    x = 192,242.64

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Similar ratio
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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.