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Finding the Fourth Proportional to 235,862.62, 325,485.75 and 128,433.94

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Solution

The fourth proportional to 235,862.62, 325,485.75 and 128,433.94 is: 177,236.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,862.62 : 325,485.75 = 128,433.94 : x
  2. Step 2: Convert to fraction form
    235,862.62/325,485.75 = 128,433.94/x
  3. Step 3: Cross multiply
    235,862.62x = 325,485.75 × 128,433.94
  4. Step 4: Simplify right side
    235,862.62x = 41,803,417,286.36
  5. Step 5: Solve for x
    x = 41,803,417,286.36/235,862.62
  6. Step 6: Final answer
    x = 177,236.30

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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.