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Finding the Fourth Proportional to 366,422.40, 548,408.88 and 208,608.48

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Solution

The fourth proportional to 366,422.40, 548,408.88 and 208,608.48 is: 312,215.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,422.40 : 548,408.88 = 208,608.48 : x
  2. Step 2: Convert to fraction form
    366,422.40/548,408.88 = 208,608.48/x
  3. Step 3: Cross multiply
    366,422.40x = 548,408.88 × 208,608.48
  4. Step 4: Simplify right side
    366,422.40x = 114,402,742,875.30
  5. Step 5: Solve for x
    x = 114,402,742,875.30/366,422.40
  6. Step 6: Final answer
    x = 312,215.47

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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.