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Finding the Fourth Proportional to 170,503.21, 255,745.72 and 52,174.63

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Solution

The fourth proportional to 170,503.21, 255,745.72 and 52,174.63 is: 78,259.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,503.21 : 255,745.72 = 52,174.63 : x
  2. Step 2: Convert to fraction form
    170,503.21/255,745.72 = 52,174.63/x
  3. Step 3: Cross multiply
    170,503.21x = 255,745.72 × 52,174.63
  4. Step 4: Simplify right side
    170,503.21x = 13,343,438,315.08
  5. Step 5: Solve for x
    x = 13,343,438,315.08/170,503.21
  6. Step 6: Final answer
    x = 78,259.16

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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.