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Finding the Fourth Proportional to 117,903.36, 162,814.70 and 74,896.71

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Solution

The fourth proportional to 117,903.36, 162,814.70 and 74,896.71 is: 103,426.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,903.36 : 162,814.70 = 74,896.71 : x
  2. Step 2: Convert to fraction form
    117,903.36/162,814.70 = 74,896.71/x
  3. Step 3: Cross multiply
    117,903.36x = 162,814.70 × 74,896.71
  4. Step 4: Simplify right side
    117,903.36x = 12,194,284,962.60
  5. Step 5: Solve for x
    x = 12,194,284,962.60/117,903.36
  6. Step 6: Final answer
    x = 103,426.11

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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.