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Finding the Fourth Proportional to 119,173.16, 164,460.30 and 65,459.42

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Solution

The fourth proportional to 119,173.16, 164,460.30 and 65,459.42 is: 90,334.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,173.16 : 164,460.30 = 65,459.42 : x
  2. Step 2: Convert to fraction form
    119,173.16/164,460.30 = 65,459.42/x
  3. Step 3: Cross multiply
    119,173.16x = 164,460.30 × 65,459.42
  4. Step 4: Simplify right side
    119,173.16x = 10,765,475,851.03
  5. Step 5: Solve for x
    x = 10,765,475,851.03/119,173.16
  6. Step 6: Final answer
    x = 90,334.74

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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.