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Finding the Fourth Proportional to 84,407.87, 116,525.17 and 65,244.34

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Solution

The fourth proportional to 84,407.87, 116,525.17 and 65,244.34 is: 90,069.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,407.87 : 116,525.17 = 65,244.34 : x
  2. Step 2: Convert to fraction form
    84,407.87/116,525.17 = 65,244.34/x
  3. Step 3: Cross multiply
    84,407.87x = 116,525.17 × 65,244.34
  4. Step 4: Simplify right side
    84,407.87x = 7,602,607,014.80
  5. Step 5: Solve for x
    x = 7,602,607,014.80/84,407.87
  6. Step 6: Final answer
    x = 90,069.88

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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.