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Finding the Fourth Proportional to 58,703.10, 87,954 and 39,432.72

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Solution

The fourth proportional to 58,703.10, 87,954 and 39,432.72 is: 59,081.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,703.10 : 87,954 = 39,432.72 : x
  2. Step 2: Convert to fraction form
    58,703.10/87,954 = 39,432.72/x
  3. Step 3: Cross multiply
    58,703.10x = 87,954 × 39,432.72
  4. Step 4: Simplify right side
    58,703.10x = 3,468,265,454.88
  5. Step 5: Solve for x
    x = 3,468,265,454.88/58,703.10
  6. Step 6: Final answer
    x = 59,081.47

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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.