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Finding the Fourth Proportional to 619,986, 929,987.64 and 176,754

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Solution

The fourth proportional to 619,986, 929,987.64 and 176,754 is: 265,133.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,986 : 929,987.64 = 176,754 : x
  2. Step 2: Convert to fraction form
    619,986/929,987.64 = 176,754/x
  3. Step 3: Cross multiply
    619,986x = 929,987.64 × 176,754
  4. Step 4: Simplify right side
    619,986x = 164,379,035,320.56
  5. Step 5: Solve for x
    x = 164,379,035,320.56/619,986
  6. Step 6: Final answer
    x = 265,133.46

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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.