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Finding the Fourth Proportional to 611,213.50, 917,779.88 and 517,670.06

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Solution

The fourth proportional to 611,213.50, 917,779.88 and 517,670.06 is: 777,317.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,213.50 : 917,779.88 = 517,670.06 : x
  2. Step 2: Convert to fraction form
    611,213.50/917,779.88 = 517,670.06/x
  3. Step 3: Cross multiply
    611,213.50x = 917,779.88 × 517,670.06
  4. Step 4: Simplify right side
    611,213.50x = 475,107,165,546.39
  5. Step 5: Solve for x
    x = 475,107,165,546.39/611,213.50
  6. Step 6: Final answer
    x = 777,317.85

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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.