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Finding the Fourth Proportional to 641,953.42, 963,090.04 and 192,682.60

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Solution

The fourth proportional to 641,953.42, 963,090.04 and 192,682.60 is: 289,071.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,953.42 : 963,090.04 = 192,682.60 : x
  2. Step 2: Convert to fraction form
    641,953.42/963,090.04 = 192,682.60/x
  3. Step 3: Cross multiply
    641,953.42x = 963,090.04 × 192,682.60
  4. Step 4: Simplify right side
    641,953.42x = 185,570,692,941.30
  5. Step 5: Solve for x
    x = 185,570,692,941.30/641,953.42
  6. Step 6: Final answer
    x = 289,071.90

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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.