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Finding the Fourth Proportional to 171,981.20, 257,971.80 and 101,824.40

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Solution

The fourth proportional to 171,981.20, 257,971.80 and 101,824.40 is: 152,736.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,981.20 : 257,971.80 = 101,824.40 : x
  2. Step 2: Convert to fraction form
    171,981.20/257,971.80 = 101,824.40/x
  3. Step 3: Cross multiply
    171,981.20x = 257,971.80 × 101,824.40
  4. Step 4: Simplify right side
    171,981.20x = 26,267,823,751.92
  5. Step 5: Solve for x
    x = 26,267,823,751.92/171,981.20
  6. Step 6: Final answer
    x = 152,736.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.