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Finding the Fourth Proportional to 325,718.18, 488,457.19 and 112,431.82

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Solution

The fourth proportional to 325,718.18, 488,457.19 and 112,431.82 is: 168,606.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,718.18 : 488,457.19 = 112,431.82 : x
  2. Step 2: Convert to fraction form
    325,718.18/488,457.19 = 112,431.82/x
  3. Step 3: Cross multiply
    325,718.18x = 488,457.19 × 112,431.82
  4. Step 4: Simplify right side
    325,718.18x = 54,918,127,859.34
  5. Step 5: Solve for x
    x = 54,918,127,859.34/325,718.18
  6. Step 6: Final answer
    x = 168,606.27

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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.