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Finding the Fourth Proportional to 17,220,640.50, 23,764,483.89 and 9,485,658.90

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Solution

The fourth proportional to 17,220,640.50, 23,764,483.89 and 9,485,658.90 is: 13,090,209.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,220,640.50 : 23,764,483.89 = 9,485,658.90 : x
  2. Step 2: Convert to fraction form
    17,220,640.50/23,764,483.89 = 9,485,658.90/x
  3. Step 3: Cross multiply
    17,220,640.50x = 23,764,483.89 × 9,485,658.90
  4. Step 4: Simplify right side
    17,220,640.50x = 225,421,788,115,085.12
  5. Step 5: Solve for x
    x = 225,421,788,115,085.12/17,220,640.50
  6. Step 6: Final answer
    x = 13,090,209.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.