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Finding the Fourth Proportional to 74,975.80, 112,476.30 and 22,390.60

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Solution

The fourth proportional to 74,975.80, 112,476.30 and 22,390.60 is: 33,589.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,975.80 : 112,476.30 = 22,390.60 : x
  2. Step 2: Convert to fraction form
    74,975.80/112,476.30 = 22,390.60/x
  3. Step 3: Cross multiply
    74,975.80x = 112,476.30 × 22,390.60
  4. Step 4: Simplify right side
    74,975.80x = 2,518,411,842.78
  5. Step 5: Solve for x
    x = 2,518,411,842.78/74,975.80
  6. Step 6: Final answer
    x = 33,589.66

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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.