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Finding the Fourth Proportional to 104,929.17, 157,336.04 and 71,686.77

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Solution

The fourth proportional to 104,929.17, 157,336.04 and 71,686.77 is: 107,490.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,929.17 : 157,336.04 = 71,686.77 : x
  2. Step 2: Convert to fraction form
    104,929.17/157,336.04 = 71,686.77/x
  3. Step 3: Cross multiply
    104,929.17x = 157,336.04 × 71,686.77
  4. Step 4: Simplify right side
    104,929.17x = 11,278,911,367.08
  5. Step 5: Solve for x
    x = 11,278,911,367.08/104,929.17
  6. Step 6: Final answer
    x = 107,490.72

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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.