Home / 85,781,566.80-128,659,908.60-25,190,974.80

Finding the Fourth Proportional to 85,781,566.80, 128,659,908.60 and 25,190,974.80

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Solution

The fourth proportional to 85,781,566.80, 128,659,908.60 and 25,190,974.80 is: 37,782,808.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,781,566.80 : 128,659,908.60 = 25,190,974.80 : x
  2. Step 2: Convert to fraction form
    85,781,566.80/128,659,908.60 = 25,190,974.80/x
  3. Step 3: Cross multiply
    85,781,566.80x = 128,659,908.60 × 25,190,974.80
  4. Step 4: Simplify right side
    85,781,566.80x = 3,241,068,515,312,903
  5. Step 5: Solve for x
    x = 3,241,068,515,312,903/85,781,566.80
  6. Step 6: Final answer
    x = 37,782,808.55

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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.