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Finding the Fourth Proportional to 111,959.64, 154,502.46 and 61,663.32

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Solution

The fourth proportional to 111,959.64, 154,502.46 and 61,663.32 is: 85,094.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,959.64 : 154,502.46 = 61,663.32 : x
  2. Step 2: Convert to fraction form
    111,959.64/154,502.46 = 61,663.32/x
  3. Step 3: Cross multiply
    111,959.64x = 154,502.46 × 61,663.32
  4. Step 4: Simplify right side
    111,959.64x = 9,527,134,631.77
  5. Step 5: Solve for x
    x = 9,527,134,631.77/111,959.64
  6. Step 6: Final answer
    x = 85,094.37

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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.