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Finding the Fourth Proportional to 468,820.79, 646,975.81 and 253,960.87

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Solution

The fourth proportional to 468,820.79, 646,975.81 and 253,960.87 is: 350,467.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,820.79 : 646,975.81 = 253,960.87 : x
  2. Step 2: Convert to fraction form
    468,820.79/646,975.81 = 253,960.87/x
  3. Step 3: Cross multiply
    468,820.79x = 646,975.81 × 253,960.87
  4. Step 4: Simplify right side
    468,820.79x = 164,306,538,306.75
  5. Step 5: Solve for x
    x = 164,306,538,306.75/468,820.79
  6. Step 6: Final answer
    x = 350,467.69

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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.