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Finding the Fourth Proportional to 171,914.40, 257,859.72 and 53,574.48

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Solution

The fourth proportional to 171,914.40, 257,859.72 and 53,574.48 is: 80,358.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,914.40 : 257,859.72 = 53,574.48 : x
  2. Step 2: Convert to fraction form
    171,914.40/257,859.72 = 53,574.48/x
  3. Step 3: Cross multiply
    171,914.40x = 257,859.72 × 53,574.48
  4. Step 4: Simplify right side
    171,914.40x = 13,814,700,411.95
  5. Step 5: Solve for x
    x = 13,814,700,411.95/171,914.40
  6. Step 6: Final answer
    x = 80,358.02

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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.