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Finding the Fourth Proportional to 111,920.80, 167,881.20 and 62,666.40

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Solution

The fourth proportional to 111,920.80, 167,881.20 and 62,666.40 is: 93,999.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,920.80 : 167,881.20 = 62,666.40 : x
  2. Step 2: Convert to fraction form
    111,920.80/167,881.20 = 62,666.40/x
  3. Step 3: Cross multiply
    111,920.80x = 167,881.20 × 62,666.40
  4. Step 4: Simplify right side
    111,920.80x = 10,520,510,431.68
  5. Step 5: Solve for x
    x = 10,520,510,431.68/111,920.80
  6. Step 6: Final answer
    x = 93,999.60

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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.