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Finding the Fourth Proportional to 423,842.08, 585,055.53 and 280,648.24

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Solution

The fourth proportional to 423,842.08, 585,055.53 and 280,648.24 is: 387,396.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,842.08 : 585,055.53 = 280,648.24 : x
  2. Step 2: Convert to fraction form
    423,842.08/585,055.53 = 280,648.24/x
  3. Step 3: Cross multiply
    423,842.08x = 585,055.53 × 280,648.24
  4. Step 4: Simplify right side
    423,842.08x = 164,194,804,796.77
  5. Step 5: Solve for x
    x = 164,194,804,796.77/423,842.08
  6. Step 6: Final answer
    x = 387,396.18

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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.