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Finding the Fourth Proportional to 111,809.42, 154,299.42 and 61,508.42

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Solution

The fourth proportional to 111,809.42, 154,299.42 and 61,508.42 is: 84,882.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,809.42 : 154,299.42 = 61,508.42 : x
  2. Step 2: Convert to fraction form
    111,809.42/154,299.42 = 61,508.42/x
  3. Step 3: Cross multiply
    111,809.42x = 154,299.42 × 61,508.42
  4. Step 4: Simplify right side
    111,809.42x = 9,490,713,531.12
  5. Step 5: Solve for x
    x = 9,490,713,531.12/111,809.42
  6. Step 6: Final answer
    x = 84,882.95

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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.