Home / 66,005.12-99,014.60-18,619.84

Finding the Fourth Proportional to 66,005.12, 99,014.60 and 18,619.84

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Solution

The fourth proportional to 66,005.12, 99,014.60 and 18,619.84 is: 27,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,005.12 : 99,014.60 = 18,619.84 : x
  2. Step 2: Convert to fraction form
    66,005.12/99,014.60 = 18,619.84/x
  3. Step 3: Cross multiply
    66,005.12x = 99,014.60 × 18,619.84
  4. Step 4: Simplify right side
    66,005.12x = 1,843,635,514.59
  5. Step 5: Solve for x
    x = 1,843,635,514.59/66,005.12
  6. Step 6: Final answer
    x = 27,931.70

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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.