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Finding the Fourth Proportional to 263,886.99, 395,830.76 and 64,207.36

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Solution

The fourth proportional to 263,886.99, 395,830.76 and 64,207.36 is: 96,311.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,886.99 : 395,830.76 = 64,207.36 : x
  2. Step 2: Convert to fraction form
    263,886.99/395,830.76 = 64,207.36/x
  3. Step 3: Cross multiply
    263,886.99x = 395,830.76 × 64,207.36
  4. Step 4: Simplify right side
    263,886.99x = 25,415,248,280.15
  5. Step 5: Solve for x
    x = 25,415,248,280.15/263,886.99
  6. Step 6: Final answer
    x = 96,311.11

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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.