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Finding the Fourth Proportional to 235,939.52, 325,585.32 and 128,509.04

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Solution

The fourth proportional to 235,939.52, 325,585.32 and 128,509.04 is: 177,336.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,939.52 : 325,585.32 = 128,509.04 : x
  2. Step 2: Convert to fraction form
    235,939.52/325,585.32 = 128,509.04/x
  3. Step 3: Cross multiply
    235,939.52x = 325,585.32 × 128,509.04
  4. Step 4: Simplify right side
    235,939.52x = 41,840,656,911.29
  5. Step 5: Solve for x
    x = 41,840,656,911.29/235,939.52
  6. Step 6: Final answer
    x = 177,336.37

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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.