Home / 66,485.38-99,727.28-19,101.64

Finding the Fourth Proportional to 66,485.38, 99,727.28 and 19,101.64

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Solution

The fourth proportional to 66,485.38, 99,727.28 and 19,101.64 is: 28,652.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,485.38 : 99,727.28 = 19,101.64 : x
  2. Step 2: Convert to fraction form
    66,485.38/99,727.28 = 19,101.64/x
  3. Step 3: Cross multiply
    66,485.38x = 99,727.28 × 19,101.64
  4. Step 4: Simplify right side
    66,485.38x = 1,904,954,600.74
  5. Step 5: Solve for x
    x = 1,904,954,600.74/66,485.38
  6. Step 6: Final answer
    x = 28,652.23

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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.