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Finding the Fourth Proportional to 468,655.20, 646,740.96 and 253,790.35

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Solution

The fourth proportional to 468,655.20, 646,740.96 and 253,790.35 is: 350,228.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,655.20 : 646,740.96 = 253,790.35 : x
  2. Step 2: Convert to fraction form
    468,655.20/646,740.96 = 253,790.35/x
  3. Step 3: Cross multiply
    468,655.20x = 646,740.96 × 253,790.35
  4. Step 4: Simplify right side
    468,655.20x = 164,136,612,029.17
  5. Step 5: Solve for x
    x = 164,136,612,029.17/468,655.20
  6. Step 6: Final answer
    x = 350,228.94

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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.