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Finding the Fourth Proportional to 111,580.01, 153,912.80 and 66,228.11

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Solution

The fourth proportional to 111,580.01, 153,912.80 and 66,228.11 is: 91,354.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,580.01 : 153,912.80 = 66,228.11 : x
  2. Step 2: Convert to fraction form
    111,580.01/153,912.80 = 66,228.11/x
  3. Step 3: Cross multiply
    111,580.01x = 153,912.80 × 66,228.11
  4. Step 4: Simplify right side
    111,580.01x = 10,193,353,517.67
  5. Step 5: Solve for x
    x = 10,193,353,517.67/111,580.01
  6. Step 6: Final answer
    x = 91,354.66

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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.