Home / 85,781,557.80-128,659,895.10-25,190,965.80

Finding the Fourth Proportional to 85,781,557.80, 128,659,895.10 and 25,190,965.80

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Solution

The fourth proportional to 85,781,557.80, 128,659,895.10 and 25,190,965.80 is: 37,782,795.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,781,557.80 : 128,659,895.10 = 25,190,965.80 : x
  2. Step 2: Convert to fraction form
    85,781,557.80/128,659,895.10 = 25,190,965.80/x
  3. Step 3: Cross multiply
    85,781,557.80x = 128,659,895.10 × 25,190,965.80
  4. Step 4: Simplify right side
    85,781,557.80x = 3,241,067,017,295,687.50
  5. Step 5: Solve for x
    x = 3,241,067,017,295,687.50/85,781,557.80
  6. Step 6: Final answer
    x = 37,782,795.05

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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.