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Finding the Fourth Proportional to 69,208.89, 95,502 and 38,999.13

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Solution

The fourth proportional to 69,208.89, 95,502 and 38,999.13 is: 53,815.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,208.89 : 95,502 = 38,999.13 : x
  2. Step 2: Convert to fraction form
    69,208.89/95,502 = 38,999.13/x
  3. Step 3: Cross multiply
    69,208.89x = 95,502 × 38,999.13
  4. Step 4: Simplify right side
    69,208.89x = 3,724,494,913.26
  5. Step 5: Solve for x
    x = 3,724,494,913.26/69,208.89
  6. Step 6: Final answer
    x = 53,815.27

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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.