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Finding the Fourth Proportional to 79,639, 119,458.50 and 24,235

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Solution

The fourth proportional to 79,639, 119,458.50 and 24,235 is: 36,352.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,639 : 119,458.50 = 24,235 : x
  2. Step 2: Convert to fraction form
    79,639/119,458.50 = 24,235/x
  3. Step 3: Cross multiply
    79,639x = 119,458.50 × 24,235
  4. Step 4: Simplify right side
    79,639x = 2,895,076,747.50
  5. Step 5: Solve for x
    x = 2,895,076,747.50/79,639
  6. Step 6: Final answer
    x = 36,352.50

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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.