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Finding the Fourth Proportional to 63,485, 87,609.30 and 35,195

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Solution

The fourth proportional to 63,485, 87,609.30 and 35,195 is: 48,569.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,485 : 87,609.30 = 35,195 : x
  2. Step 2: Convert to fraction form
    63,485/87,609.30 = 35,195/x
  3. Step 3: Cross multiply
    63,485x = 87,609.30 × 35,195
  4. Step 4: Simplify right side
    63,485x = 3,083,409,313.50
  5. Step 5: Solve for x
    x = 3,083,409,313.50/63,485
  6. Step 6: Final answer
    x = 48,569.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.