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Finding the Fourth Proportional to 58,409.10, 87,616.76 and 18,963.32

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Solution

The fourth proportional to 58,409.10, 87,616.76 and 18,963.32 is: 28,445.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,409.10 : 87,616.76 = 18,963.32 : x
  2. Step 2: Convert to fraction form
    58,409.10/87,616.76 = 18,963.32/x
  3. Step 3: Cross multiply
    58,409.10x = 87,616.76 × 18,963.32
  4. Step 4: Simplify right side
    58,409.10x = 1,661,504,124.34
  5. Step 5: Solve for x
    x = 1,661,504,124.34/58,409.10
  6. Step 6: Final answer
    x = 28,445.98

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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.