Home / 128,289,827.59-192,452,628.63-39,665,634.16

Finding the Fourth Proportional to 128,289,827.59, 192,452,628.63 and 39,665,634.16

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Solution

The fourth proportional to 128,289,827.59, 192,452,628.63 and 39,665,634.16 is: 59,503,981.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,289,827.59 : 192,452,628.63 = 39,665,634.16 : x
  2. Step 2: Convert to fraction form
    128,289,827.59/192,452,628.63 = 39,665,634.16/x
  3. Step 3: Cross multiply
    128,289,827.59x = 192,452,628.63 × 39,665,634.16
  4. Step 4: Simplify right side
    128,289,827.59x = 7,633,755,560,367,921
  5. Step 5: Solve for x
    x = 7,633,755,560,367,921/128,289,827.59
  6. Step 6: Final answer
    x = 59,503,981.76

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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.