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Finding the Fourth Proportional to 65,991.51, 98,987.27 and 19,244.39

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Solution

The fourth proportional to 65,991.51, 98,987.27 and 19,244.39 is: 28,866.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,991.51 : 98,987.27 = 19,244.39 : x
  2. Step 2: Convert to fraction form
    65,991.51/98,987.27 = 19,244.39/x
  3. Step 3: Cross multiply
    65,991.51x = 98,987.27 × 19,244.39
  4. Step 4: Simplify right side
    65,991.51x = 1,904,949,037.76
  5. Step 5: Solve for x
    x = 1,904,949,037.76/65,991.51
  6. Step 6: Final answer
    x = 28,866.58

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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.