Home / 85,801,687.20-128,702,530.80-77,298,631.20

Finding the Fourth Proportional to 85,801,687.20, 128,702,530.80 and 77,298,631.20

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Solution

The fourth proportional to 85,801,687.20, 128,702,530.80 and 77,298,631.20 is: 115,947,946.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,801,687.20 : 128,702,530.80 = 77,298,631.20 : x
  2. Step 2: Convert to fraction form
    85,801,687.20/128,702,530.80 = 77,298,631.20/x
  3. Step 3: Cross multiply
    85,801,687.20x = 128,702,530.80 × 77,298,631.20
  4. Step 4: Simplify right side
    85,801,687.20x = 9,948,529,462,815,842
  5. Step 5: Solve for x
    x = 9,948,529,462,815,842/85,801,687.20
  6. Step 6: Final answer
    x = 115,947,946.80

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Similar ratio
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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.