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Finding the Fourth Proportional to 172,773, 259,129.43 and 46,421.81

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Solution

The fourth proportional to 172,773, 259,129.43 and 46,421.81 is: 69,624.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,773 : 259,129.43 = 46,421.81 : x
  2. Step 2: Convert to fraction form
    172,773/259,129.43 = 46,421.81/x
  3. Step 3: Cross multiply
    172,773x = 259,129.43 × 46,421.81
  4. Step 4: Simplify right side
    172,773x = 12,029,256,782.93
  5. Step 5: Solve for x
    x = 12,029,256,782.93/172,773
  6. Step 6: Final answer
    x = 69,624.63

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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.