Home / 66,412.15-99,634.82-19,031.20

Finding the Fourth Proportional to 66,412.15, 99,634.82 and 19,031.20

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Solution

The fourth proportional to 66,412.15, 99,634.82 and 19,031.20 is: 28,551.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,412.15 : 99,634.82 = 19,031.20 : x
  2. Step 2: Convert to fraction form
    66,412.15/99,634.82 = 19,031.20/x
  3. Step 3: Cross multiply
    66,412.15x = 99,634.82 × 19,031.20
  4. Step 4: Simplify right side
    66,412.15x = 1,896,170,186.38
  5. Step 5: Solve for x
    x = 1,896,170,186.38/66,412.15
  6. Step 6: Final answer
    x = 28,551.56

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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.