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Finding the Fourth Proportional to 78,354.63, 117,529.65 and 22,194.63

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Solution

The fourth proportional to 78,354.63, 117,529.65 and 22,194.63 is: 33,291.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,354.63 : 117,529.65 = 22,194.63 : x
  2. Step 2: Convert to fraction form
    78,354.63/117,529.65 = 22,194.63/x
  3. Step 3: Cross multiply
    78,354.63x = 117,529.65 × 22,194.63
  4. Step 4: Simplify right side
    78,354.63x = 2,608,527,095.78
  5. Step 5: Solve for x
    x = 2,608,527,095.78/78,354.63
  6. Step 6: Final answer
    x = 33,291.29

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1.5x scale

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.