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Finding the Fourth Proportional to 119,192.72, 164,486.88 and 65,478.32

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Solution

The fourth proportional to 119,192.72, 164,486.88 and 65,478.32 is: 90,360.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,192.72 : 164,486.88 = 65,478.32 : x
  2. Step 2: Convert to fraction form
    119,192.72/164,486.88 = 65,478.32/x
  3. Step 3: Cross multiply
    119,192.72x = 164,486.88 × 65,478.32
  4. Step 4: Simplify right side
    119,192.72x = 10,770,324,564.44
  5. Step 5: Solve for x
    x = 10,770,324,564.44/119,192.72
  6. Step 6: Final answer
    x = 90,360.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.