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Finding the Fourth Proportional to 136,525,687.20, 204,788,530.80 and 45,649,276.20

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Solution

The fourth proportional to 136,525,687.20, 204,788,530.80 and 45,649,276.20 is: 68,473,914.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,525,687.20 : 204,788,530.80 = 45,649,276.20 : x
  2. Step 2: Convert to fraction form
    136,525,687.20/204,788,530.80 = 45,649,276.20/x
  3. Step 3: Cross multiply
    136,525,687.20x = 204,788,530.80 × 45,649,276.20
  4. Step 4: Simplify right side
    136,525,687.20x = 9,348,448,205,081,408
  5. Step 5: Solve for x
    x = 9,348,448,205,081,408/136,525,687.20
  6. Step 6: Final answer
    x = 68,473,914.30

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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.