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Finding the Fourth Proportional to 152,440.80, 228,920.40 and 113,042.40

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Solution

The fourth proportional to 152,440.80, 228,920.40 and 113,042.40 is: 169,755.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,440.80 : 228,920.40 = 113,042.40 : x
  2. Step 2: Convert to fraction form
    152,440.80/228,920.40 = 113,042.40/x
  3. Step 3: Cross multiply
    152,440.80x = 228,920.40 × 113,042.40
  4. Step 4: Simplify right side
    152,440.80x = 25,877,711,424.96
  5. Step 5: Solve for x
    x = 25,877,711,424.96/152,440.80
  6. Step 6: Final answer
    x = 169,755.81

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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.