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Finding the Fourth Proportional to 228,978.36, 316,006.08 and 127,013.52

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Solution

The fourth proportional to 228,978.36, 316,006.08 and 127,013.52 is: 175,287.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,978.36 : 316,006.08 = 127,013.52 : x
  2. Step 2: Convert to fraction form
    228,978.36/316,006.08 = 127,013.52/x
  3. Step 3: Cross multiply
    228,978.36x = 316,006.08 × 127,013.52
  4. Step 4: Simplify right side
    228,978.36x = 40,137,044,562.20
  5. Step 5: Solve for x
    x = 40,137,044,562.20/228,978.36
  6. Step 6: Final answer
    x = 175,287.50

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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.