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Finding the Fourth Proportional to 410,014.60, 615,021.90 and 327,070.60

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Solution

The fourth proportional to 410,014.60, 615,021.90 and 327,070.60 is: 490,605.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,014.60 : 615,021.90 = 327,070.60 : x
  2. Step 2: Convert to fraction form
    410,014.60/615,021.90 = 327,070.60/x
  3. Step 3: Cross multiply
    410,014.60x = 615,021.90 × 327,070.60
  4. Step 4: Simplify right side
    410,014.60x = 201,155,581,846.14
  5. Step 5: Solve for x
    x = 201,155,581,846.14/410,014.60
  6. Step 6: Final answer
    x = 490,605.90

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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.