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Finding the Fourth Proportional to 111,853.50, 154,353.16 and 61,549.26

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Solution

The fourth proportional to 111,853.50, 154,353.16 and 61,549.26 is: 84,935.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,853.50 : 154,353.16 = 61,549.26 : x
  2. Step 2: Convert to fraction form
    111,853.50/154,353.16 = 61,549.26/x
  3. Step 3: Cross multiply
    111,853.50x = 154,353.16 × 61,549.26
  4. Step 4: Simplify right side
    111,853.50x = 9,500,322,776.66
  5. Step 5: Solve for x
    x = 9,500,322,776.66/111,853.50
  6. Step 6: Final answer
    x = 84,935.41

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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.