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Finding the Fourth Proportional to 235,435.82, 324,914.71 and 128,003.54

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Solution

The fourth proportional to 235,435.82, 324,914.71 and 128,003.54 is: 176,652.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,435.82 : 324,914.71 = 128,003.54 : x
  2. Step 2: Convert to fraction form
    235,435.82/324,914.71 = 128,003.54/x
  3. Step 3: Cross multiply
    235,435.82x = 324,914.71 × 128,003.54
  4. Step 4: Simplify right side
    235,435.82x = 41,590,232,438.06
  5. Step 5: Solve for x
    x = 41,590,232,438.06/235,435.82
  6. Step 6: Final answer
    x = 176,652.10

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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.