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Finding the Fourth Proportional to 525,656.72, 725,406.16 and 283,939.30

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Solution

The fourth proportional to 525,656.72, 725,406.16 and 283,939.30 is: 391,836.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,656.72 : 725,406.16 = 283,939.30 : x
  2. Step 2: Convert to fraction form
    525,656.72/725,406.16 = 283,939.30/x
  3. Step 3: Cross multiply
    525,656.72x = 725,406.16 × 283,939.30
  4. Step 4: Simplify right side
    525,656.72x = 205,971,317,286.09
  5. Step 5: Solve for x
    x = 205,971,317,286.09/525,656.72
  6. Step 6: Final answer
    x = 391,836.17

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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.