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Finding the Fourth Proportional to 38,015.80, 53,309.60 and 38,015.80

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Solution

The fourth proportional to 38,015.80, 53,309.60 and 38,015.80 is: 53,309.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,015.80 : 53,309.60 = 38,015.80 : x
  2. Step 2: Convert to fraction form
    38,015.80/53,309.60 = 38,015.80/x
  3. Step 3: Cross multiply
    38,015.80x = 53,309.60 × 38,015.80
  4. Step 4: Simplify right side
    38,015.80x = 2,026,607,091.68
  5. Step 5: Solve for x
    x = 2,026,607,091.68/38,015.80
  6. Step 6: Final answer
    x = 53,309.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.