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Finding the Fourth Proportional to 235,684.32, 325,251.16 and 128,261.16

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Solution

The fourth proportional to 235,684.32, 325,251.16 and 128,261.16 is: 177,004.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,684.32 : 325,251.16 = 128,261.16 : x
  2. Step 2: Convert to fraction form
    235,684.32/325,251.16 = 128,261.16/x
  3. Step 3: Cross multiply
    235,684.32x = 325,251.16 × 128,261.16
  4. Step 4: Simplify right side
    235,684.32x = 41,717,091,072.95
  5. Step 5: Solve for x
    x = 41,717,091,072.95/235,684.32
  6. Step 6: Final answer
    x = 177,004.10

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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.