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Finding the Fourth Proportional to 483,373.99, 725,009.95 and 128,423.89

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Solution

The fourth proportional to 483,373.99, 725,009.95 and 128,423.89 is: 192,622.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,373.99 : 725,009.95 = 128,423.89 : x
  2. Step 2: Convert to fraction form
    483,373.99/725,009.95 = 128,423.89/x
  3. Step 3: Cross multiply
    483,373.99x = 725,009.95 × 128,423.89
  4. Step 4: Simplify right side
    483,373.99x = 93,108,598,067.71
  5. Step 5: Solve for x
    x = 93,108,598,067.71/483,373.99
  6. Step 6: Final answer
    x = 192,622.28

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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.