Home / 66,281.72-99,425.64-18,900.04

Finding the Fourth Proportional to 66,281.72, 99,425.64 and 18,900.04

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Solution

The fourth proportional to 66,281.72, 99,425.64 and 18,900.04 is: 28,350.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,281.72 : 99,425.64 = 18,900.04 : x
  2. Step 2: Convert to fraction form
    66,281.72/99,425.64 = 18,900.04/x
  3. Step 3: Cross multiply
    66,281.72x = 99,425.64 × 18,900.04
  4. Step 4: Simplify right side
    66,281.72x = 1,879,148,573.03
  5. Step 5: Solve for x
    x = 1,879,148,573.03/66,281.72
  6. Step 6: Final answer
    x = 28,350.93

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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.