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Finding the Fourth Proportional to 256,711.85, 354,153.87 and 171,856.25

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Solution

The fourth proportional to 256,711.85, 354,153.87 and 171,856.25 is: 237,089.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,711.85 : 354,153.87 = 171,856.25 : x
  2. Step 2: Convert to fraction form
    256,711.85/354,153.87 = 171,856.25/x
  3. Step 3: Cross multiply
    256,711.85x = 354,153.87 × 171,856.25
  4. Step 4: Simplify right side
    256,711.85x = 60,863,556,021.19
  5. Step 5: Solve for x
    x = 60,863,556,021.19/256,711.85
  6. Step 6: Final answer
    x = 237,089.00

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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.