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Finding the Fourth Proportional to 353,073.40, 529,610.10 and 318,081.40

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Solution

The fourth proportional to 353,073.40, 529,610.10 and 318,081.40 is: 477,122.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,073.40 : 529,610.10 = 318,081.40 : x
  2. Step 2: Convert to fraction form
    353,073.40/529,610.10 = 318,081.40/x
  3. Step 3: Cross multiply
    353,073.40x = 529,610.10 × 318,081.40
  4. Step 4: Simplify right side
    353,073.40x = 168,459,122,062.14
  5. Step 5: Solve for x
    x = 168,459,122,062.14/353,073.40
  6. Step 6: Final answer
    x = 477,122.10

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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.