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Finding the Fourth Proportional to 111,920.80, 167,881.20 and 99,673.60

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Solution

The fourth proportional to 111,920.80, 167,881.20 and 99,673.60 is: 149,510.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,920.80 : 167,881.20 = 99,673.60 : x
  2. Step 2: Convert to fraction form
    111,920.80/167,881.20 = 99,673.60/x
  3. Step 3: Cross multiply
    111,920.80x = 167,881.20 × 99,673.60
  4. Step 4: Simplify right side
    111,920.80x = 16,733,323,576.32
  5. Step 5: Solve for x
    x = 16,733,323,576.32/111,920.80
  6. Step 6: Final answer
    x = 149,510.40

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1.5x scale

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.