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Finding the Fourth Proportional to 139,968,209.60, 209,952,314.40 and 117,797,278.40

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Solution

The fourth proportional to 139,968,209.60, 209,952,314.40 and 117,797,278.40 is: 176,695,917.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,209.60 : 209,952,314.40 = 117,797,278.40 : x
  2. Step 2: Convert to fraction form
    139,968,209.60/209,952,314.40 = 117,797,278.40/x
  3. Step 3: Cross multiply
    139,968,209.60x = 209,952,314.40 × 117,797,278.40
  4. Step 4: Simplify right side
    139,968,209.60x = 24,731,811,230,101,132
  5. Step 5: Solve for x
    x = 24,731,811,230,101,132/139,968,209.60
  6. Step 6: Final answer
    x = 176,695,917.60

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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.