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Finding the Fourth Proportional to 235,888.21, 325,517.10 and 128,455.87

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Solution

The fourth proportional to 235,888.21, 325,517.10 and 128,455.87 is: 177,264.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,888.21 : 325,517.10 = 128,455.87 : x
  2. Step 2: Convert to fraction form
    235,888.21/325,517.10 = 128,455.87/x
  3. Step 3: Cross multiply
    235,888.21x = 325,517.10 × 128,455.87
  4. Step 4: Simplify right side
    235,888.21x = 41,814,582,280.38
  5. Step 5: Solve for x
    x = 41,814,582,280.38/235,888.21
  6. Step 6: Final answer
    x = 177,264.40

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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.