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Finding the Fourth Proportional to 364,642.29, 547,208.06 and 127,985.67

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Solution

The fourth proportional to 364,642.29, 547,208.06 and 127,985.67 is: 192,064.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,642.29 : 547,208.06 = 127,985.67 : x
  2. Step 2: Convert to fraction form
    364,642.29/547,208.06 = 127,985.67/x
  3. Step 3: Cross multiply
    364,642.29x = 547,208.06 × 127,985.67
  4. Step 4: Simplify right side
    364,642.29x = 70,034,789,548.57
  5. Step 5: Solve for x
    x = 70,034,789,548.57/364,642.29
  6. Step 6: Final answer
    x = 192,064.36

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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.