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Finding the Fourth Proportional to 208,445.72, 313,086.99 and 124,369.95

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Solution

The fourth proportional to 208,445.72, 313,086.99 and 124,369.95 is: 186,804.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,445.72 : 313,086.99 = 124,369.95 : x
  2. Step 2: Convert to fraction form
    208,445.72/313,086.99 = 124,369.95/x
  3. Step 3: Cross multiply
    208,445.72x = 313,086.99 × 124,369.95
  4. Step 4: Simplify right side
    208,445.72x = 38,938,613,291.95
  5. Step 5: Solve for x
    x = 38,938,613,291.95/208,445.72
  6. Step 6: Final answer
    x = 186,804.58

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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.