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Finding the Fourth Proportional to 317,322.12, 476,449.74 and 130,698.12

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Solution

The fourth proportional to 317,322.12, 476,449.74 and 130,698.12 is: 196,239.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,322.12 : 476,449.74 = 130,698.12 : x
  2. Step 2: Convert to fraction form
    317,322.12/476,449.74 = 130,698.12/x
  3. Step 3: Cross multiply
    317,322.12x = 476,449.74 × 130,698.12
  4. Step 4: Simplify right side
    317,322.12x = 62,271,085,292.49
  5. Step 5: Solve for x
    x = 62,271,085,292.49/317,322.12
  6. Step 6: Final answer
    x = 196,239.35

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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.