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Finding the Fourth Proportional to 353,139.60, 529,709.40 and 163,599.60

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Solution

The fourth proportional to 353,139.60, 529,709.40 and 163,599.60 is: 245,399.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,139.60 : 529,709.40 = 163,599.60 : x
  2. Step 2: Convert to fraction form
    353,139.60/529,709.40 = 163,599.60/x
  3. Step 3: Cross multiply
    353,139.60x = 529,709.40 × 163,599.60
  4. Step 4: Simplify right side
    353,139.60x = 86,660,245,956.24
  5. Step 5: Solve for x
    x = 86,660,245,956.24/353,139.60
  6. Step 6: Final answer
    x = 245,399.40

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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.