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Finding the Fourth Proportional to 543,305.29, 815,810.91 and 460,155.55

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Solution

The fourth proportional to 543,305.29, 815,810.91 and 460,155.55 is: 690,955.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,305.29 : 815,810.91 = 460,155.55 : x
  2. Step 2: Convert to fraction form
    543,305.29/815,810.91 = 460,155.55/x
  3. Step 3: Cross multiply
    543,305.29x = 815,810.91 × 460,155.55
  4. Step 4: Simplify right side
    543,305.29x = 375,399,917,987.05
  5. Step 5: Solve for x
    x = 375,399,917,987.05/543,305.29
  6. Step 6: Final answer
    x = 690,955.76

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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.