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Finding the Fourth Proportional to 235,731.33, 325,308.24 and 128,301.48

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Solution

The fourth proportional to 235,731.33, 325,308.24 and 128,301.48 is: 177,055.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,731.33 : 325,308.24 = 128,301.48 : x
  2. Step 2: Convert to fraction form
    235,731.33/325,308.24 = 128,301.48/x
  3. Step 3: Cross multiply
    235,731.33x = 325,308.24 × 128,301.48
  4. Step 4: Simplify right side
    235,731.33x = 41,737,528,648.20
  5. Step 5: Solve for x
    x = 41,737,528,648.20/235,731.33
  6. Step 6: Final answer
    x = 177,055.50

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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.