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Finding the Fourth Proportional to 58,492.38, 87,755.58 and 21,051.78

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Solution

The fourth proportional to 58,492.38, 87,755.58 and 21,051.78 is: 31,583.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,492.38 : 87,755.58 = 21,051.78 : x
  2. Step 2: Convert to fraction form
    58,492.38/87,755.58 = 21,051.78/x
  3. Step 3: Cross multiply
    58,492.38x = 87,755.58 × 21,051.78
  4. Step 4: Simplify right side
    58,492.38x = 1,847,411,163.93
  5. Step 5: Solve for x
    x = 1,847,411,163.93/58,492.38
  6. Step 6: Final answer
    x = 31,583.79

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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.