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Finding the Fourth Proportional to 104,096,436.80, 155,955,698.40 and 84,822,843.20

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Solution

The fourth proportional to 104,096,436.80, 155,955,698.40 and 84,822,843.20 is: 127,080,293.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,096,436.80 : 155,955,698.40 = 84,822,843.20 : x
  2. Step 2: Convert to fraction form
    104,096,436.80/155,955,698.40 = 84,822,843.20/x
  3. Step 3: Cross multiply
    104,096,436.80x = 155,955,698.40 × 84,822,843.20
  4. Step 4: Simplify right side
    104,096,436.80x = 13,228,605,751,529,692
  5. Step 5: Solve for x
    x = 13,228,605,751,529,692/104,096,436.80
  6. Step 6: Final answer
    x = 127,080,293.60

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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.