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Finding the Fourth Proportional to 354,365.16, 531,457.18 and 104,988.84

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Solution

The fourth proportional to 354,365.16, 531,457.18 and 104,988.84 is: 157,456.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,365.16 : 531,457.18 = 104,988.84 : x
  2. Step 2: Convert to fraction form
    354,365.16/531,457.18 = 104,988.84/x
  3. Step 3: Cross multiply
    354,365.16x = 531,457.18 × 104,988.84
  4. Step 4: Simplify right side
    354,365.16x = 55,797,072,837.87
  5. Step 5: Solve for x
    x = 55,797,072,837.87/354,365.16
  6. Step 6: Final answer
    x = 157,456.43

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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.