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Finding the Fourth Proportional to 235,708.60, 325,271.62 and 128,276.33

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Solution

The fourth proportional to 235,708.60, 325,271.62 and 128,276.33 is: 177,017.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,708.60 : 325,271.62 = 128,276.33 : x
  2. Step 2: Convert to fraction form
    235,708.60/325,271.62 = 128,276.33/x
  3. Step 3: Cross multiply
    235,708.60x = 325,271.62 × 128,276.33
  4. Step 4: Simplify right side
    235,708.60x = 41,724,647,719.71
  5. Step 5: Solve for x
    x = 41,724,647,719.71/235,708.60
  6. Step 6: Final answer
    x = 177,017.93

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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.