Home / 66,165.12-99,248.36-19,418.88

Finding the Fourth Proportional to 66,165.12, 99,248.36 and 19,418.88

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Solution

The fourth proportional to 66,165.12, 99,248.36 and 19,418.88 is: 29,128.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,165.12 : 99,248.36 = 19,418.88 : x
  2. Step 2: Convert to fraction form
    66,165.12/99,248.36 = 19,418.88/x
  3. Step 3: Cross multiply
    66,165.12x = 99,248.36 × 19,418.88
  4. Step 4: Simplify right side
    66,165.12x = 1,927,291,993.04
  5. Step 5: Solve for x
    x = 1,927,291,993.04/66,165.12
  6. Step 6: Final answer
    x = 29,128.52

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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.