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Finding the Fourth Proportional to 111,593.76, 154,021.74 and 66,296.90

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Solution

The fourth proportional to 111,593.76, 154,021.74 and 66,296.90 is: 91,503.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,593.76 : 154,021.74 = 66,296.90 : x
  2. Step 2: Convert to fraction form
    111,593.76/154,021.74 = 66,296.90/x
  3. Step 3: Cross multiply
    111,593.76x = 154,021.74 × 66,296.90
  4. Step 4: Simplify right side
    111,593.76x = 10,211,163,894.61
  5. Step 5: Solve for x
    x = 10,211,163,894.61/111,593.76
  6. Step 6: Final answer
    x = 91,503.00

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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.