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Finding the Fourth Proportional to 111,382.46, 153,651.70 and 79,569.82

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Solution

The fourth proportional to 111,382.46, 153,651.70 and 79,569.82 is: 109,766.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,382.46 : 153,651.70 = 79,569.82 : x
  2. Step 2: Convert to fraction form
    111,382.46/153,651.70 = 79,569.82/x
  3. Step 3: Cross multiply
    111,382.46x = 153,651.70 × 79,569.82
  4. Step 4: Simplify right side
    111,382.46x = 12,226,038,111.69
  5. Step 5: Solve for x
    x = 12,226,038,111.69/111,382.46
  6. Step 6: Final answer
    x = 109,766.28

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.