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Finding the Fourth Proportional to 585,143.60, 806,943.48 and 403,565.36

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Solution

The fourth proportional to 585,143.60, 806,943.48 and 403,565.36 is: 556,537.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,143.60 : 806,943.48 = 403,565.36 : x
  2. Step 2: Convert to fraction form
    585,143.60/806,943.48 = 403,565.36/x
  3. Step 3: Cross multiply
    585,143.60x = 806,943.48 × 403,565.36
  4. Step 4: Simplify right side
    585,143.60x = 325,654,436,005.85
  5. Step 5: Solve for x
    x = 325,654,436,005.85/585,143.60
  6. Step 6: Final answer
    x = 556,537.64

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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.