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Finding the Fourth Proportional to 418,577.07, 627,865.59 and 123,089.07

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Solution

The fourth proportional to 418,577.07, 627,865.59 and 123,089.07 is: 184,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,577.07 : 627,865.59 = 123,089.07 : x
  2. Step 2: Convert to fraction form
    418,577.07/627,865.59 = 123,089.07/x
  3. Step 3: Cross multiply
    418,577.07x = 627,865.59 × 123,089.07
  4. Step 4: Simplify right side
    418,577.07x = 77,283,391,558.10
  5. Step 5: Solve for x
    x = 77,283,391,558.10/418,577.07
  6. Step 6: Final answer
    x = 184,633.60

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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.