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Finding the Fourth Proportional to 116,962.38, 161,409.51 and 65,970.45

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Solution

The fourth proportional to 116,962.38, 161,409.51 and 65,970.45 is: 91,040.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,962.38 : 161,409.51 = 65,970.45 : x
  2. Step 2: Convert to fraction form
    116,962.38/161,409.51 = 65,970.45/x
  3. Step 3: Cross multiply
    116,962.38x = 161,409.51 × 65,970.45
  4. Step 4: Simplify right side
    116,962.38x = 10,648,258,008.98
  5. Step 5: Solve for x
    x = 10,648,258,008.98/116,962.38
  6. Step 6: Final answer
    x = 91,040.03

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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.