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Finding the Fourth Proportional to 119,173.60, 164,459.19 and 65,461.96

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Solution

The fourth proportional to 119,173.60, 164,459.19 and 65,461.96 is: 90,337.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,173.60 : 164,459.19 = 65,461.96 : x
  2. Step 2: Convert to fraction form
    119,173.60/164,459.19 = 65,461.96/x
  3. Step 3: Cross multiply
    119,173.60x = 164,459.19 × 65,461.96
  4. Step 4: Simplify right side
    119,173.60x = 10,765,820,917.41
  5. Step 5: Solve for x
    x = 10,765,820,917.41/119,173.60
  6. Step 6: Final answer
    x = 90,337.30

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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.