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Finding the Fourth Proportional to 208,659.04, 287,950.75 and 113,165.51

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Solution

The fourth proportional to 208,659.04, 287,950.75 and 113,165.51 is: 156,169.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,659.04 : 287,950.75 = 113,165.51 : x
  2. Step 2: Convert to fraction form
    208,659.04/287,950.75 = 113,165.51/x
  3. Step 3: Cross multiply
    208,659.04x = 287,950.75 × 113,165.51
  4. Step 4: Simplify right side
    208,659.04x = 32,586,091,755.97
  5. Step 5: Solve for x
    x = 32,586,091,755.97/208,659.04
  6. Step 6: Final answer
    x = 156,169.09

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1.5x scale

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.