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Finding the Fourth Proportional to 65,139.40, 97,636.20 and 27,693.10

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Solution

The fourth proportional to 65,139.40, 97,636.20 and 27,693.10 is: 41,508.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,139.40 : 97,636.20 = 27,693.10 : x
  2. Step 2: Convert to fraction form
    65,139.40/97,636.20 = 27,693.10/x
  3. Step 3: Cross multiply
    65,139.40x = 97,636.20 × 27,693.10
  4. Step 4: Simplify right side
    65,139.40x = 2,703,849,050.22
  5. Step 5: Solve for x
    x = 2,703,849,050.22/65,139.40
  6. Step 6: Final answer
    x = 41,508.66

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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.