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Finding the Fourth Proportional to 256,479.52, 353,911.20 and 141,751.12

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Solution

The fourth proportional to 256,479.52, 353,911.20 and 141,751.12 is: 195,599.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,479.52 : 353,911.20 = 141,751.12 : x
  2. Step 2: Convert to fraction form
    256,479.52/353,911.20 = 141,751.12/x
  3. Step 3: Cross multiply
    256,479.52x = 353,911.20 × 141,751.12
  4. Step 4: Simplify right side
    256,479.52x = 50,167,308,980.54
  5. Step 5: Solve for x
    x = 50,167,308,980.54/256,479.52
  6. Step 6: Final answer
    x = 195,599.67

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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.