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Finding the Fourth Proportional to 66,795.92, 100,170.84 and 19,398.16

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Solution

The fourth proportional to 66,795.92, 100,170.84 and 19,398.16 is: 29,090.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,795.92 : 100,170.84 = 19,398.16 : x
  2. Step 2: Convert to fraction form
    66,795.92/100,170.84 = 19,398.16/x
  3. Step 3: Cross multiply
    66,795.92x = 100,170.84 × 19,398.16
  4. Step 4: Simplify right side
    66,795.92x = 1,943,129,981.65
  5. Step 5: Solve for x
    x = 1,943,129,981.65/66,795.92
  6. Step 6: Final answer
    x = 29,090.55

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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.