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Finding the Fourth Proportional to 235,723.64, 325,287.90 and 128,293.34

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Solution

The fourth proportional to 235,723.64, 325,287.90 and 128,293.34 is: 177,038.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,723.64 : 325,287.90 = 128,293.34 : x
  2. Step 2: Convert to fraction form
    235,723.64/325,287.90 = 128,293.34/x
  3. Step 3: Cross multiply
    235,723.64x = 325,287.90 × 128,293.34
  4. Step 4: Simplify right side
    235,723.64x = 41,732,269,526.15
  5. Step 5: Solve for x
    x = 41,732,269,526.15/235,723.64
  6. Step 6: Final answer
    x = 177,038.97

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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.