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Finding the Fourth Proportional to 42,843,890.94, 64,265,696.22 and 15,550,147.32

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Solution

The fourth proportional to 42,843,890.94, 64,265,696.22 and 15,550,147.32 is: 23,325,170.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,843,890.94 : 64,265,696.22 = 15,550,147.32 : x
  2. Step 2: Convert to fraction form
    42,843,890.94/64,265,696.22 = 15,550,147.32/x
  3. Step 3: Cross multiply
    42,843,890.94x = 64,265,696.22 × 15,550,147.32
  4. Step 4: Simplify right side
    42,843,890.94x = 999,341,043,843,367.12
  5. Step 5: Solve for x
    x = 999,341,043,843,367.12/42,843,890.94
  6. Step 6: Final answer
    x = 23,325,170.10

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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.