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Finding the Fourth Proportional to 101,185.26, 139,608.45 and 65,362.20

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Solution

The fourth proportional to 101,185.26, 139,608.45 and 65,362.20 is: 90,182.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,185.26 : 139,608.45 = 65,362.20 : x
  2. Step 2: Convert to fraction form
    101,185.26/139,608.45 = 65,362.20/x
  3. Step 3: Cross multiply
    101,185.26x = 139,608.45 × 65,362.20
  4. Step 4: Simplify right side
    101,185.26x = 9,125,115,430.59
  5. Step 5: Solve for x
    x = 9,125,115,430.59/101,185.26
  6. Step 6: Final answer
    x = 90,182.26

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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.