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Finding the Fourth Proportional to 529,631.40, 793,410.30 and 318,642.60

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Solution

The fourth proportional to 529,631.40, 793,410.30 and 318,642.60 is: 477,340.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,631.40 : 793,410.30 = 318,642.60 : x
  2. Step 2: Convert to fraction form
    529,631.40/793,410.30 = 318,642.60/x
  3. Step 3: Cross multiply
    529,631.40x = 793,410.30 × 318,642.60
  4. Step 4: Simplify right side
    529,631.40x = 252,814,320,858.78
  5. Step 5: Solve for x
    x = 252,814,320,858.78/529,631.40
  6. Step 6: Final answer
    x = 477,340.13

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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.