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Finding the Fourth Proportional to 364,039.40, 545,961.90 and 127,357.40

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Solution

The fourth proportional to 364,039.40, 545,961.90 and 127,357.40 is: 191,002.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,039.40 : 545,961.90 = 127,357.40 : x
  2. Step 2: Convert to fraction form
    364,039.40/545,961.90 = 127,357.40/x
  3. Step 3: Cross multiply
    364,039.40x = 545,961.90 × 127,357.40
  4. Step 4: Simplify right side
    364,039.40x = 69,532,288,083.06
  5. Step 5: Solve for x
    x = 69,532,288,083.06/364,039.40
  6. Step 6: Final answer
    x = 191,002.10

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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.