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Finding the Fourth Proportional to 525,686.80, 725,448.44 and 283,969.38

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Solution

The fourth proportional to 525,686.80, 725,448.44 and 283,969.38 is: 391,878.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,686.80 : 725,448.44 = 283,969.38 : x
  2. Step 2: Convert to fraction form
    525,686.80/725,448.44 = 283,969.38/x
  3. Step 3: Cross multiply
    525,686.80x = 725,448.44 × 283,969.38
  4. Step 4: Simplify right side
    525,686.80x = 206,005,143,728.77
  5. Step 5: Solve for x
    x = 206,005,143,728.77/525,686.80
  6. Step 6: Final answer
    x = 391,878.10

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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.