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Finding the Fourth Proportional to 468,679.40, 646,769.58 and 253,817.72

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Solution

The fourth proportional to 468,679.40, 646,769.58 and 253,817.72 is: 350,264.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,679.40 : 646,769.58 = 253,817.72 : x
  2. Step 2: Convert to fraction form
    468,679.40/646,769.58 = 253,817.72/x
  3. Step 3: Cross multiply
    468,679.40x = 646,769.58 × 253,817.72
  4. Step 4: Simplify right side
    468,679.40x = 164,161,580,160.96
  5. Step 5: Solve for x
    x = 164,161,580,160.96/468,679.40
  6. Step 6: Final answer
    x = 350,264.13

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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.