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Finding the Fourth Proportional to 93,765.80, 129,262.33 and 66,861.65

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Solution

The fourth proportional to 93,765.80, 129,262.33 and 66,861.65 is: 92,173.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,765.80 : 129,262.33 = 66,861.65 : x
  2. Step 2: Convert to fraction form
    93,765.80/129,262.33 = 66,861.65/x
  3. Step 3: Cross multiply
    93,765.80x = 129,262.33 × 66,861.65
  4. Step 4: Simplify right side
    93,765.80x = 8,642,693,073.38
  5. Step 5: Solve for x
    x = 8,642,693,073.38/93,765.80
  6. Step 6: Final answer
    x = 92,173.19

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1.5x scale

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.