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Finding the Fourth Proportional to 264,927.20, 397,390.80 and 87,461.60

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Solution

The fourth proportional to 264,927.20, 397,390.80 and 87,461.60 is: 131,192.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,927.20 : 397,390.80 = 87,461.60 : x
  2. Step 2: Convert to fraction form
    264,927.20/397,390.80 = 87,461.60/x
  3. Step 3: Cross multiply
    264,927.20x = 397,390.80 × 87,461.60
  4. Step 4: Simplify right side
    264,927.20x = 34,756,435,193.28
  5. Step 5: Solve for x
    x = 34,756,435,193.28/264,927.20
  6. Step 6: Final answer
    x = 131,192.40

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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.