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Finding the Fourth Proportional to 65,206.34, 97,817.70 and 18,459.20

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Solution

The fourth proportional to 65,206.34, 97,817.70 and 18,459.20 is: 27,691.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,206.34 : 97,817.70 = 18,459.20 : x
  2. Step 2: Convert to fraction form
    65,206.34/97,817.70 = 18,459.20/x
  3. Step 3: Cross multiply
    65,206.34x = 97,817.70 × 18,459.20
  4. Step 4: Simplify right side
    65,206.34x = 1,805,636,487.84
  5. Step 5: Solve for x
    x = 1,805,636,487.84/65,206.34
  6. Step 6: Final answer
    x = 27,691.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.