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Finding the Fourth Proportional to 252,978.88, 349,147.92 and 152,374.72

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Solution

The fourth proportional to 252,978.88, 349,147.92 and 152,374.72 is: 210,299.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,978.88 : 349,147.92 = 152,374.72 : x
  2. Step 2: Convert to fraction form
    252,978.88/349,147.92 = 152,374.72/x
  3. Step 3: Cross multiply
    252,978.88x = 349,147.92 × 152,374.72
  4. Step 4: Simplify right side
    252,978.88x = 53,201,316,548.58
  5. Step 5: Solve for x
    x = 53,201,316,548.58/252,978.88
  6. Step 6: Final answer
    x = 210,299.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.