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Finding the Fourth Proportional to 621,356.58, 857,760.84 and 468,456.66

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Solution

The fourth proportional to 621,356.58, 857,760.84 and 468,456.66 is: 646,687.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,356.58 : 857,760.84 = 468,456.66 : x
  2. Step 2: Convert to fraction form
    621,356.58/857,760.84 = 468,456.66/x
  3. Step 3: Cross multiply
    621,356.58x = 857,760.84 × 468,456.66
  4. Step 4: Simplify right side
    621,356.58x = 401,823,778,185.19
  5. Step 5: Solve for x
    x = 401,823,778,185.19/621,356.58
  6. Step 6: Final answer
    x = 646,687.89

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1.5x scale

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.