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Finding the Fourth Proportional to 228,503.76, 315,042.80 and 156,759.24

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Solution

The fourth proportional to 228,503.76, 315,042.80 and 156,759.24 is: 216,127.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,503.76 : 315,042.80 = 156,759.24 : x
  2. Step 2: Convert to fraction form
    228,503.76/315,042.80 = 156,759.24/x
  3. Step 3: Cross multiply
    228,503.76x = 315,042.80 × 156,759.24
  4. Step 4: Simplify right side
    228,503.76x = 49,385,869,895.47
  5. Step 5: Solve for x
    x = 49,385,869,895.47/228,503.76
  6. Step 6: Final answer
    x = 216,127.17

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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.