Home / 128,317,709.57-192,399,698.03-40,841,441.10

Finding the Fourth Proportional to 128,317,709.57, 192,399,698.03 and 40,841,441.10

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Solution

The fourth proportional to 128,317,709.57, 192,399,698.03 and 40,841,441.10 is: 61,237,696.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,317,709.57 : 192,399,698.03 = 40,841,441.10 : x
  2. Step 2: Convert to fraction form
    128,317,709.57/192,399,698.03 = 40,841,441.10/x
  3. Step 3: Cross multiply
    128,317,709.57x = 192,399,698.03 × 40,841,441.10
  4. Step 4: Simplify right side
    128,317,709.57x = 7,857,880,934,545,824
  5. Step 5: Solve for x
    x = 7,857,880,934,545,824/128,317,709.57
  6. Step 6: Final answer
    x = 61,237,696.35

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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.