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Finding the Fourth Proportional to 111,426.88, 153,657.12 and 66,740.80

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Solution

The fourth proportional to 111,426.88, 153,657.12 and 66,740.80 is: 92,035.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,426.88 : 153,657.12 = 66,740.80 : x
  2. Step 2: Convert to fraction form
    111,426.88/153,657.12 = 66,740.80/x
  3. Step 3: Cross multiply
    111,426.88x = 153,657.12 × 66,740.80
  4. Step 4: Simplify right side
    111,426.88x = 10,255,199,114.50
  5. Step 5: Solve for x
    x = 10,255,199,114.50/111,426.88
  6. Step 6: Final answer
    x = 92,035.24

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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.