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Finding the Fourth Proportional to 114,059.20, 170,829.60 and 72,068.80

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Solution

The fourth proportional to 114,059.20, 170,829.60 and 72,068.80 is: 107,939.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,059.20 : 170,829.60 = 72,068.80 : x
  2. Step 2: Convert to fraction form
    114,059.20/170,829.60 = 72,068.80/x
  3. Step 3: Cross multiply
    114,059.20x = 170,829.60 × 72,068.80
  4. Step 4: Simplify right side
    114,059.20x = 12,311,484,276.48
  5. Step 5: Solve for x
    x = 12,311,484,276.48/114,059.20
  6. Step 6: Final answer
    x = 107,939.42

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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.