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Finding the Fourth Proportional to 111,543.80, 153,958.85 and 63,812.12

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Solution

The fourth proportional to 111,543.80, 153,958.85 and 63,812.12 is: 88,076.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,543.80 : 153,958.85 = 63,812.12 : x
  2. Step 2: Convert to fraction form
    111,543.80/153,958.85 = 63,812.12/x
  3. Step 3: Cross multiply
    111,543.80x = 153,958.85 × 63,812.12
  4. Step 4: Simplify right side
    111,543.80x = 9,824,440,611.26
  5. Step 5: Solve for x
    x = 9,824,440,611.26/111,543.80
  6. Step 6: Final answer
    x = 88,076.98

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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.