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Finding the Fourth Proportional to 117,705.80, 176,558.70 and 70,466.60

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Solution

The fourth proportional to 117,705.80, 176,558.70 and 70,466.60 is: 105,699.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,705.80 : 176,558.70 = 70,466.60 : x
  2. Step 2: Convert to fraction form
    117,705.80/176,558.70 = 70,466.60/x
  3. Step 3: Cross multiply
    117,705.80x = 176,558.70 × 70,466.60
  4. Step 4: Simplify right side
    117,705.80x = 12,441,491,289.42
  5. Step 5: Solve for x
    x = 12,441,491,289.42/117,705.80
  6. Step 6: Final answer
    x = 105,699.90

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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.