Home / 65,985.78-98,987.58-19,238.25

Finding the Fourth Proportional to 65,985.78, 98,987.58 and 19,238.25

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Solution

The fourth proportional to 65,985.78, 98,987.58 and 19,238.25 is: 28,859.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,985.78 : 98,987.58 = 19,238.25 : x
  2. Step 2: Convert to fraction form
    65,985.78/98,987.58 = 19,238.25/x
  3. Step 3: Cross multiply
    65,985.78x = 98,987.58 × 19,238.25
  4. Step 4: Simplify right side
    65,985.78x = 1,904,347,810.94
  5. Step 5: Solve for x
    x = 1,904,347,810.94/65,985.78
  6. Step 6: Final answer
    x = 28,859.97

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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.