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Finding the Fourth Proportional to 79,888,593.60, 119,832,890.40 and 28,763,969.40

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Solution

The fourth proportional to 79,888,593.60, 119,832,890.40 and 28,763,969.40 is: 43,145,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,888,593.60 : 119,832,890.40 = 28,763,969.40 : x
  2. Step 2: Convert to fraction form
    79,888,593.60/119,832,890.40 = 28,763,969.40/x
  3. Step 3: Cross multiply
    79,888,593.60x = 119,832,890.40 × 28,763,969.40
  4. Step 4: Simplify right side
    79,888,593.60x = 3,446,869,592,579,154
  5. Step 5: Solve for x
    x = 3,446,869,592,579,154/79,888,593.60
  6. Step 6: Final answer
    x = 43,145,954.10

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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.