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Finding the Fourth Proportional to 100,736,235.60, 151,029,703.80 and 68,307,205.20

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Solution

The fourth proportional to 100,736,235.60, 151,029,703.80 and 68,307,205.20 is: 102,410,189.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,736,235.60 : 151,029,703.80 = 68,307,205.20 : x
  2. Step 2: Convert to fraction form
    100,736,235.60/151,029,703.80 = 68,307,205.20/x
  3. Step 3: Cross multiply
    100,736,235.60x = 151,029,703.80 × 68,307,205.20
  4. Step 4: Simplify right side
    100,736,235.60x = 10,316,416,968,761,822
  5. Step 5: Solve for x
    x = 10,316,416,968,761,822/100,736,235.60
  6. Step 6: Final answer
    x = 102,410,189.42

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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.