Home / 66,128.53-99,193.61-19,382.35

Finding the Fourth Proportional to 66,128.53, 99,193.61 and 19,382.35

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Solution

The fourth proportional to 66,128.53, 99,193.61 and 19,382.35 is: 29,073.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,128.53 : 99,193.61 = 19,382.35 : x
  2. Step 2: Convert to fraction form
    66,128.53/99,193.61 = 19,382.35/x
  3. Step 3: Cross multiply
    66,128.53x = 99,193.61 × 19,382.35
  4. Step 4: Simplify right side
    66,128.53x = 1,922,605,266.78
  5. Step 5: Solve for x
    x = 1,922,605,266.78/66,128.53
  6. Step 6: Final answer
    x = 29,073.76

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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.