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Finding the Fourth Proportional to 205,917.03, 308,803.14 and 61,779.87

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Solution

The fourth proportional to 205,917.03, 308,803.14 and 61,779.87 is: 92,648.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,917.03 : 308,803.14 = 61,779.87 : x
  2. Step 2: Convert to fraction form
    205,917.03/308,803.14 = 61,779.87/x
  3. Step 3: Cross multiply
    205,917.03x = 308,803.14 × 61,779.87
  4. Step 4: Simplify right side
    205,917.03x = 19,077,817,844.79
  5. Step 5: Solve for x
    x = 19,077,817,844.79/205,917.03
  6. Step 6: Final answer
    x = 92,648.08

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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.