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Finding the Fourth Proportional to 235,832.57, 325,440.45 and 128,400.14

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Solution

The fourth proportional to 235,832.57, 325,440.45 and 128,400.14 is: 177,187.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,832.57 : 325,440.45 = 128,400.14 : x
  2. Step 2: Convert to fraction form
    235,832.57/325,440.45 = 128,400.14/x
  3. Step 3: Cross multiply
    235,832.57x = 325,440.45 × 128,400.14
  4. Step 4: Simplify right side
    235,832.57x = 41,786,599,341.66
  5. Step 5: Solve for x
    x = 41,786,599,341.66/235,832.57
  6. Step 6: Final answer
    x = 177,187.57

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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.