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Finding the Fourth Proportional to 621,589.29, 857,784.53 and 349,657.26

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Solution

The fourth proportional to 621,589.29, 857,784.53 and 349,657.26 is: 482,522.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,589.29 : 857,784.53 = 349,657.26 : x
  2. Step 2: Convert to fraction form
    621,589.29/857,784.53 = 349,657.26/x
  3. Step 3: Cross multiply
    621,589.29x = 857,784.53 × 349,657.26
  4. Step 4: Simplify right side
    621,589.29x = 299,930,586,087.64
  5. Step 5: Solve for x
    x = 299,930,586,087.64/621,589.29
  6. Step 6: Final answer
    x = 482,522.13

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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.