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Finding the Fourth Proportional to 77,303.72, 106,893.87 and 61,360.49

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Solution

The fourth proportional to 77,303.72, 106,893.87 and 61,360.49 is: 84,847.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,303.72 : 106,893.87 = 61,360.49 : x
  2. Step 2: Convert to fraction form
    77,303.72/106,893.87 = 61,360.49/x
  3. Step 3: Cross multiply
    77,303.72x = 106,893.87 × 61,360.49
  4. Step 4: Simplify right side
    77,303.72x = 6,559,060,241.20
  5. Step 5: Solve for x
    x = 6,559,060,241.20/77,303.72
  6. Step 6: Final answer
    x = 84,847.93

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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.