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Finding the Fourth Proportional to 65,907.76, 98,878.08 and 21,537.04

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Solution

The fourth proportional to 65,907.76, 98,878.08 and 21,537.04 is: 32,310.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,907.76 : 98,878.08 = 21,537.04 : x
  2. Step 2: Convert to fraction form
    65,907.76/98,878.08 = 21,537.04/x
  3. Step 3: Cross multiply
    65,907.76x = 98,878.08 × 21,537.04
  4. Step 4: Simplify right side
    65,907.76x = 2,129,541,164.08
  5. Step 5: Solve for x
    x = 2,129,541,164.08/65,907.76
  6. Step 6: Final answer
    x = 32,310.93

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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.