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Finding the Fourth Proportional to 364,849.52, 547,303.48 and 128,245.28

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Solution

The fourth proportional to 364,849.52, 547,303.48 and 128,245.28 is: 192,378.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,849.52 : 547,303.48 = 128,245.28 : x
  2. Step 2: Convert to fraction form
    364,849.52/547,303.48 = 128,245.28/x
  3. Step 3: Cross multiply
    364,849.52x = 547,303.48 × 128,245.28
  4. Step 4: Simplify right side
    364,849.52x = 70,189,089,085.22
  5. Step 5: Solve for x
    x = 70,189,089,085.22/364,849.52
  6. Step 6: Final answer
    x = 192,378.19

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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.