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Finding the Fourth Proportional to 364,751.72, 547,384.54 and 128,112.84

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Solution

The fourth proportional to 364,751.72, 547,384.54 and 128,112.84 is: 192,259.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,751.72 : 547,384.54 = 128,112.84 : x
  2. Step 2: Convert to fraction form
    364,751.72/547,384.54 = 128,112.84/x
  3. Step 3: Cross multiply
    364,751.72x = 547,384.54 × 128,112.84
  4. Step 4: Simplify right side
    364,751.72x = 70,126,987,991.49
  5. Step 5: Solve for x
    x = 70,126,987,991.49/364,751.72
  6. Step 6: Final answer
    x = 192,259.51

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1.5x scale

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.