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Finding the Fourth Proportional to 85,693.98, 118,238.16 and 55,083.06

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Solution

The fourth proportional to 85,693.98, 118,238.16 and 55,083.06 is: 76,002.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,693.98 : 118,238.16 = 55,083.06 : x
  2. Step 2: Convert to fraction form
    85,693.98/118,238.16 = 55,083.06/x
  3. Step 3: Cross multiply
    85,693.98x = 118,238.16 × 55,083.06
  4. Step 4: Simplify right side
    85,693.98x = 6,512,919,661.57
  5. Step 5: Solve for x
    x = 6,512,919,661.57/85,693.98
  6. Step 6: Final answer
    x = 76,002.07

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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.