Home / 89,155,806.40-133,733,709.60-78,633,274.60

Finding the Fourth Proportional to 89,155,806.40, 133,733,709.60 and 78,633,274.60

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Solution

The fourth proportional to 89,155,806.40, 133,733,709.60 and 78,633,274.60 is: 117,949,911.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,155,806.40 : 133,733,709.60 = 78,633,274.60 : x
  2. Step 2: Convert to fraction form
    89,155,806.40/133,733,709.60 = 78,633,274.60/x
  3. Step 3: Cross multiply
    89,155,806.40x = 133,733,709.60 × 78,633,274.60
  4. Step 4: Simplify right side
    89,155,806.40x = 10,515,919,510,253,454
  5. Step 5: Solve for x
    x = 10,515,919,510,253,454/89,155,806.40
  6. Step 6: Final answer
    x = 117,949,911.90

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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.