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Finding the Fourth Proportional to 161,390.64, 222,747.39 and 93,396.81

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Solution

The fourth proportional to 161,390.64, 222,747.39 and 93,396.81 is: 128,903.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,390.64 : 222,747.39 = 93,396.81 : x
  2. Step 2: Convert to fraction form
    161,390.64/222,747.39 = 93,396.81/x
  3. Step 3: Cross multiply
    161,390.64x = 222,747.39 × 93,396.81
  4. Step 4: Simplify right side
    161,390.64x = 20,803,895,661.83
  5. Step 5: Solve for x
    x = 20,803,895,661.83/161,390.64
  6. Step 6: Final answer
    x = 128,903.98

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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.