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Finding the Fourth Proportional to 157,819.71, 236,730.45 and 52,638.39

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Solution

The fourth proportional to 157,819.71, 236,730.45 and 52,638.39 is: 78,957.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,819.71 : 236,730.45 = 52,638.39 : x
  2. Step 2: Convert to fraction form
    157,819.71/236,730.45 = 52,638.39/x
  3. Step 3: Cross multiply
    157,819.71x = 236,730.45 × 52,638.39
  4. Step 4: Simplify right side
    157,819.71x = 12,461,109,751.98
  5. Step 5: Solve for x
    x = 12,461,109,751.98/157,819.71
  6. Step 6: Final answer
    x = 78,957.88

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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.