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Finding the Fourth Proportional to 111,861.73, 154,369.13 and 61,560.73

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Solution

The fourth proportional to 111,861.73, 154,369.13 and 61,560.73 is: 84,953.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,861.73 : 154,369.13 = 61,560.73 : x
  2. Step 2: Convert to fraction form
    111,861.73/154,369.13 = 61,560.73/x
  3. Step 3: Cross multiply
    111,861.73x = 154,369.13 × 61,560.73
  4. Step 4: Simplify right side
    111,861.73x = 9,503,076,332.26
  5. Step 5: Solve for x
    x = 9,503,076,332.26/111,861.73
  6. Step 6: Final answer
    x = 84,953.78

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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.