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Finding the Fourth Proportional to 58,653.19, 87,970.87 and 19,209.43

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Solution

The fourth proportional to 58,653.19, 87,970.87 and 19,209.43 is: 28,811.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,653.19 : 87,970.87 = 19,209.43 : x
  2. Step 2: Convert to fraction form
    58,653.19/87,970.87 = 19,209.43/x
  3. Step 3: Cross multiply
    58,653.19x = 87,970.87 × 19,209.43
  4. Step 4: Simplify right side
    58,653.19x = 1,689,870,269.30
  5. Step 5: Solve for x
    x = 1,689,870,269.30/58,653.19
  6. Step 6: Final answer
    x = 28,811.23

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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.