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Finding the Fourth Proportional to 104,578.60, 156,695.10 and 89,026.60

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Solution

The fourth proportional to 104,578.60, 156,695.10 and 89,026.60 is: 133,392.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,578.60 : 156,695.10 = 89,026.60 : x
  2. Step 2: Convert to fraction form
    104,578.60/156,695.10 = 89,026.60/x
  3. Step 3: Cross multiply
    104,578.60x = 156,695.10 × 89,026.60
  4. Step 4: Simplify right side
    104,578.60x = 13,950,031,989.66
  5. Step 5: Solve for x
    x = 13,950,031,989.66/104,578.60
  6. Step 6: Final answer
    x = 133,392.80

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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.