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Finding the Fourth Proportional to 236,018.31, 325,709.00 and 128,588.31

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Solution

The fourth proportional to 236,018.31, 325,709.00 and 128,588.31 is: 177,453.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,018.31 : 325,709.00 = 128,588.31 : x
  2. Step 2: Convert to fraction form
    236,018.31/325,709.00 = 128,588.31/x
  3. Step 3: Cross multiply
    236,018.31x = 325,709.00 × 128,588.31
  4. Step 4: Simplify right side
    236,018.31x = 41,882,369,701.05
  5. Step 5: Solve for x
    x = 41,882,369,701.05/236,018.31
  6. Step 6: Final answer
    x = 177,453.90

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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.