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Finding the Fourth Proportional to 111,163.61, 153,405.46 and 60,862.25

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Solution

The fourth proportional to 111,163.61, 153,405.46 and 60,862.25 is: 83,989.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,163.61 : 153,405.46 = 60,862.25 : x
  2. Step 2: Convert to fraction form
    111,163.61/153,405.46 = 60,862.25/x
  3. Step 3: Cross multiply
    111,163.61x = 153,405.46 × 60,862.25
  4. Step 4: Simplify right side
    111,163.61x = 9,336,601,457.89
  5. Step 5: Solve for x
    x = 9,336,601,457.89/111,163.61
  6. Step 6: Final answer
    x = 83,989.73

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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.