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Finding the Fourth Proportional to 336,405,646.40, 504,608,469.60 and 90,761,806.40

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Solution

The fourth proportional to 336,405,646.40, 504,608,469.60 and 90,761,806.40 is: 136,142,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,405,646.40 : 504,608,469.60 = 90,761,806.40 : x
  2. Step 2: Convert to fraction form
    336,405,646.40/504,608,469.60 = 90,761,806.40/x
  3. Step 3: Cross multiply
    336,405,646.40x = 504,608,469.60 × 90,761,806.40
  4. Step 4: Simplify right side
    336,405,646.40x = 45,799,176,225,635,488
  5. Step 5: Solve for x
    x = 45,799,176,225,635,488/336,405,646.40
  6. Step 6: Final answer
    x = 136,142,709.60

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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.