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Finding the Fourth Proportional to 171,929.40, 257,894.10 and 53,599.80

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Solution

The fourth proportional to 171,929.40, 257,894.10 and 53,599.80 is: 80,399.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,929.40 : 257,894.10 = 53,599.80 : x
  2. Step 2: Convert to fraction form
    171,929.40/257,894.10 = 53,599.80/x
  3. Step 3: Cross multiply
    171,929.40x = 257,894.10 × 53,599.80
  4. Step 4: Simplify right side
    171,929.40x = 13,823,072,181.18
  5. Step 5: Solve for x
    x = 13,823,072,181.18/171,929.40
  6. Step 6: Final answer
    x = 80,399.70

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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.