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Finding the Fourth Proportional to 355,956.48, 533,762.64 and 131,422.32

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Solution

The fourth proportional to 355,956.48, 533,762.64 and 131,422.32 is: 197,069.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,956.48 : 533,762.64 = 131,422.32 : x
  2. Step 2: Convert to fraction form
    355,956.48/533,762.64 = 131,422.32/x
  3. Step 3: Cross multiply
    355,956.48x = 533,762.64 × 131,422.32
  4. Step 4: Simplify right side
    355,956.48x = 70,148,324,478.12
  5. Step 5: Solve for x
    x = 70,148,324,478.12/355,956.48
  6. Step 6: Final answer
    x = 197,069.95

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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.