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Finding the Fourth Proportional to 228,059.76, 314,708.91 and 126,079.11

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Solution

The fourth proportional to 228,059.76, 314,708.91 and 126,079.11 is: 173,981.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,059.76 : 314,708.91 = 126,079.11 : x
  2. Step 2: Convert to fraction form
    228,059.76/314,708.91 = 126,079.11/x
  3. Step 3: Cross multiply
    228,059.76x = 314,708.91 × 126,079.11
  4. Step 4: Simplify right side
    228,059.76x = 39,678,220,068.64
  5. Step 5: Solve for x
    x = 39,678,220,068.64/228,059.76
  6. Step 6: Final answer
    x = 173,981.68

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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.