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Finding the Fourth Proportional to 111,889.50, 154,407.51 and 61,588.50

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Solution

The fourth proportional to 111,889.50, 154,407.51 and 61,588.50 is: 84,992.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,889.50 : 154,407.51 = 61,588.50 : x
  2. Step 2: Convert to fraction form
    111,889.50/154,407.51 = 61,588.50/x
  3. Step 3: Cross multiply
    111,889.50x = 154,407.51 × 61,588.50
  4. Step 4: Simplify right side
    111,889.50x = 9,509,726,929.64
  5. Step 5: Solve for x
    x = 9,509,726,929.64/111,889.50
  6. Step 6: Final answer
    x = 84,992.13

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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.