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Finding the Fourth Proportional to 325,271.70, 487,980.45 and 125,574.30

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Solution

The fourth proportional to 325,271.70, 487,980.45 and 125,574.30 is: 188,389.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,271.70 : 487,980.45 = 125,574.30 : x
  2. Step 2: Convert to fraction form
    325,271.70/487,980.45 = 125,574.30/x
  3. Step 3: Cross multiply
    325,271.70x = 487,980.45 × 125,574.30
  4. Step 4: Simplify right side
    325,271.70x = 61,277,803,422.44
  5. Step 5: Solve for x
    x = 61,277,803,422.44/325,271.70
  6. Step 6: Final answer
    x = 188,389.59

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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.