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Finding the Fourth Proportional to 674,062.90, 929,779.62 and 512,563.90

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Solution

The fourth proportional to 674,062.90, 929,779.62 and 512,563.90 is: 707,013.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,062.90 : 929,779.62 = 512,563.90 : x
  2. Step 2: Convert to fraction form
    674,062.90/929,779.62 = 512,563.90/x
  3. Step 3: Cross multiply
    674,062.90x = 929,779.62 × 512,563.90
  4. Step 4: Simplify right side
    674,062.90x = 476,571,468,167.72
  5. Step 5: Solve for x
    x = 476,571,468,167.72/674,062.90
  6. Step 6: Final answer
    x = 707,013.35

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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.