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Finding the Fourth Proportional to 111,557.86, 153,949.53 and 66,845.86

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Solution

The fourth proportional to 111,557.86, 153,949.53 and 66,845.86 is: 92,247.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,557.86 : 153,949.53 = 66,845.86 : x
  2. Step 2: Convert to fraction form
    111,557.86/153,949.53 = 66,845.86/x
  3. Step 3: Cross multiply
    111,557.86x = 153,949.53 × 66,845.86
  4. Step 4: Simplify right side
    111,557.86x = 10,290,888,729.45
  5. Step 5: Solve for x
    x = 10,290,888,729.45/111,557.86
  6. Step 6: Final answer
    x = 92,247.10

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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.