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Finding the Fourth Proportional to 364,685.04, 547,271.91 and 128,028.42

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Solution

The fourth proportional to 364,685.04, 547,271.91 and 128,028.42 is: 192,128.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,685.04 : 547,271.91 = 128,028.42 : x
  2. Step 2: Convert to fraction form
    364,685.04/547,271.91 = 128,028.42/x
  3. Step 3: Cross multiply
    364,685.04x = 547,271.91 × 128,028.42
  4. Step 4: Simplify right side
    364,685.04x = 70,066,357,947.68
  5. Step 5: Solve for x
    x = 70,066,357,947.68/364,685.04
  6. Step 6: Final answer
    x = 192,128.41

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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.