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Finding the Fourth Proportional to 65,538.07, 98,290.90 and 28,093.90

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Solution

The fourth proportional to 65,538.07, 98,290.90 and 28,093.90 is: 42,133.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,538.07 : 98,290.90 = 28,093.90 : x
  2. Step 2: Convert to fraction form
    65,538.07/98,290.90 = 28,093.90/x
  3. Step 3: Cross multiply
    65,538.07x = 98,290.90 × 28,093.90
  4. Step 4: Simplify right side
    65,538.07x = 2,761,374,715.51
  5. Step 5: Solve for x
    x = 2,761,374,715.51/65,538.07
  6. Step 6: Final answer
    x = 42,133.90

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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.