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Finding the Fourth Proportional to 171,344.80, 256,940.40 and 77,802.40

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Solution

The fourth proportional to 171,344.80, 256,940.40 and 77,802.40 is: 116,668.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,344.80 : 256,940.40 = 77,802.40 : x
  2. Step 2: Convert to fraction form
    171,344.80/256,940.40 = 77,802.40/x
  3. Step 3: Cross multiply
    171,344.80x = 256,940.40 × 77,802.40
  4. Step 4: Simplify right side
    171,344.80x = 19,990,579,776.96
  5. Step 5: Solve for x
    x = 19,990,579,776.96/171,344.80
  6. Step 6: Final answer
    x = 116,668.73

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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.