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Finding the Fourth Proportional to 173,239,368.80, 259,891,826.80 and 69,616,640.64

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Solution

The fourth proportional to 173,239,368.80, 259,891,826.80 and 69,616,640.64 is: 104,438,131.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,239,368.80 : 259,891,826.80 = 69,616,640.64 : x
  2. Step 2: Convert to fraction form
    173,239,368.80/259,891,826.80 = 69,616,640.64/x
  3. Step 3: Cross multiply
    173,239,368.80x = 259,891,826.80 × 69,616,640.64
  4. Step 4: Simplify right side
    173,239,368.80x = 18,092,795,911,608,724
  5. Step 5: Solve for x
    x = 18,092,795,911,608,724/173,239,368.80
  6. Step 6: Final answer
    x = 104,438,131.11

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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.