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Finding the Fourth Proportional to 100,553,903.80, 150,830,855.70 and 39,969,629.80

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Solution

The fourth proportional to 100,553,903.80, 150,830,855.70 and 39,969,629.80 is: 59,954,444.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,553,903.80 : 150,830,855.70 = 39,969,629.80 : x
  2. Step 2: Convert to fraction form
    100,553,903.80/150,830,855.70 = 39,969,629.80/x
  3. Step 3: Cross multiply
    100,553,903.80x = 150,830,855.70 × 39,969,629.80
  4. Step 4: Simplify right side
    100,553,903.80x = 6,028,653,464,746,219
  5. Step 5: Solve for x
    x = 6,028,653,464,746,219/100,553,903.80
  6. Step 6: Final answer
    x = 59,954,444.70

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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.