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Finding the Fourth Proportional to 171,334.60, 257,014.90 and 53,017.90

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Solution

The fourth proportional to 171,334.60, 257,014.90 and 53,017.90 is: 79,530.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,334.60 : 257,014.90 = 53,017.90 : x
  2. Step 2: Convert to fraction form
    171,334.60/257,014.90 = 53,017.90/x
  3. Step 3: Cross multiply
    171,334.60x = 257,014.90 × 53,017.90
  4. Step 4: Simplify right side
    171,334.60x = 13,626,390,266.71
  5. Step 5: Solve for x
    x = 13,626,390,266.71/171,334.60
  6. Step 6: Final answer
    x = 79,530.87

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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.