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Finding the Fourth Proportional to 58,307.67, 87,474.24 and 18,868.77

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Solution

The fourth proportional to 58,307.67, 87,474.24 and 18,868.77 is: 28,307.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,307.67 : 87,474.24 = 18,868.77 : x
  2. Step 2: Convert to fraction form
    58,307.67/87,474.24 = 18,868.77/x
  3. Step 3: Cross multiply
    58,307.67x = 87,474.24 × 18,868.77
  4. Step 4: Simplify right side
    58,307.67x = 1,650,531,315.48
  5. Step 5: Solve for x
    x = 1,650,531,315.48/58,307.67
  6. Step 6: Final answer
    x = 28,307.28

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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.