Home / 66,315.75-99,476.37-19,568.63

Finding the Fourth Proportional to 66,315.75, 99,476.37 and 19,568.63

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Solution

The fourth proportional to 66,315.75, 99,476.37 and 19,568.63 is: 29,353.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,315.75 : 99,476.37 = 19,568.63 : x
  2. Step 2: Convert to fraction form
    66,315.75/99,476.37 = 19,568.63/x
  3. Step 3: Cross multiply
    66,315.75x = 99,476.37 × 19,568.63
  4. Step 4: Simplify right side
    66,315.75x = 1,946,616,278.27
  5. Step 5: Solve for x
    x = 1,946,616,278.27/66,315.75
  6. Step 6: Final answer
    x = 29,353.76

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Double scale
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Similar ratio
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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.