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Finding the Fourth Proportional to 363,465.70, 545,004.15 and 126,816.10

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Solution

The fourth proportional to 363,465.70, 545,004.15 and 126,816.10 is: 190,156.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,465.70 : 545,004.15 = 126,816.10 : x
  2. Step 2: Convert to fraction form
    363,465.70/545,004.15 = 126,816.10/x
  3. Step 3: Cross multiply
    363,465.70x = 545,004.15 × 126,816.10
  4. Step 4: Simplify right side
    363,465.70x = 69,115,300,786.82
  5. Step 5: Solve for x
    x = 69,115,300,786.82/363,465.70
  6. Step 6: Final answer
    x = 190,156.32

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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.