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Finding the Fourth Proportional to 521,653.95, 782,771.64 and 281,763.00

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Solution

The fourth proportional to 521,653.95, 782,771.64 and 281,763.00 is: 422,801.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,653.95 : 782,771.64 = 281,763.00 : x
  2. Step 2: Convert to fraction form
    521,653.95/782,771.64 = 281,763.00/x
  3. Step 3: Cross multiply
    521,653.95x = 782,771.64 × 281,763.00
  4. Step 4: Simplify right side
    521,653.95x = 220,556,081,687.46
  5. Step 5: Solve for x
    x = 220,556,081,687.46/521,653.95
  6. Step 6: Final answer
    x = 422,801.52

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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.