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Finding the Fourth Proportional to 216,808.40, 325,260.42 and 64,999.46

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Solution

The fourth proportional to 216,808.40, 325,260.42 and 64,999.46 is: 97,513.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,808.40 : 325,260.42 = 64,999.46 : x
  2. Step 2: Convert to fraction form
    216,808.40/325,260.42 = 64,999.46/x
  3. Step 3: Cross multiply
    216,808.40x = 325,260.42 × 64,999.46
  4. Step 4: Simplify right side
    216,808.40x = 21,141,751,659.37
  5. Step 5: Solve for x
    x = 21,141,751,659.37/216,808.40
  6. Step 6: Final answer
    x = 97,513.53

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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.