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Finding the Fourth Proportional to 111,653.38, 154,079.80 and 60,666.89

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Solution

The fourth proportional to 111,653.38, 154,079.80 and 60,666.89 is: 83,719.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,653.38 : 154,079.80 = 60,666.89 : x
  2. Step 2: Convert to fraction form
    111,653.38/154,079.80 = 60,666.89/x
  3. Step 3: Cross multiply
    111,653.38x = 154,079.80 × 60,666.89
  4. Step 4: Simplify right side
    111,653.38x = 9,347,542,318.75
  5. Step 5: Solve for x
    x = 9,347,542,318.75/111,653.38
  6. Step 6: Final answer
    x = 83,719.30

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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.