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Finding the Fourth Proportional to 111,605.16, 154,022.66 and 61,304.68

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Solution

The fourth proportional to 111,605.16, 154,022.66 and 61,304.68 is: 84,604.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,605.16 : 154,022.66 = 61,304.68 : x
  2. Step 2: Convert to fraction form
    111,605.16/154,022.66 = 61,304.68/x
  3. Step 3: Cross multiply
    111,605.16x = 154,022.66 × 61,304.68
  4. Step 4: Simplify right side
    111,605.16x = 9,442,309,884.05
  5. Step 5: Solve for x
    x = 9,442,309,884.05/111,605.16
  6. Step 6: Final answer
    x = 84,604.60

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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.