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Finding the Fourth Proportional to 208,291.44, 287,441.60 and 112,798.11

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Solution

The fourth proportional to 208,291.44, 287,441.60 and 112,798.11 is: 155,661.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,291.44 : 287,441.60 = 112,798.11 : x
  2. Step 2: Convert to fraction form
    208,291.44/287,441.60 = 112,798.11/x
  3. Step 3: Cross multiply
    208,291.44x = 287,441.60 × 112,798.11
  4. Step 4: Simplify right side
    208,291.44x = 32,422,868,651.39
  5. Step 5: Solve for x
    x = 32,422,868,651.39/208,291.44
  6. Step 6: Final answer
    x = 155,661.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.