Home / 84,985,714.70-127,667,528.85-81,773,449.10

Finding the Fourth Proportional to 84,985,714.70, 127,667,528.85 and 81,773,449.10

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Solution

The fourth proportional to 84,985,714.70, 127,667,528.85 and 81,773,449.10 is: 122,841,988.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,985,714.70 : 127,667,528.85 = 81,773,449.10 : x
  2. Step 2: Convert to fraction form
    84,985,714.70/127,667,528.85 = 81,773,449.10/x
  3. Step 3: Cross multiply
    84,985,714.70x = 127,667,528.85 × 81,773,449.10
  4. Step 4: Simplify right side
    84,985,714.70x = 10,439,814,172,138,256
  5. Step 5: Solve for x
    x = 10,439,814,172,138,256/84,985,714.70
  6. Step 6: Final answer
    x = 122,841,988.32

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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.