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Finding the Fourth Proportional to 666,208.33, 918,534.29 and 555,985.64

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Solution

The fourth proportional to 666,208.33, 918,534.29 and 555,985.64 is: 766,564.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,208.33 : 918,534.29 = 555,985.64 : x
  2. Step 2: Convert to fraction form
    666,208.33/918,534.29 = 555,985.64/x
  3. Step 3: Cross multiply
    666,208.33x = 918,534.29 × 555,985.64
  4. Step 4: Simplify right side
    666,208.33x = 510,691,874,604.00
  5. Step 5: Solve for x
    x = 510,691,874,604.00/666,208.33
  6. Step 6: Final answer
    x = 766,564.83

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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.