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Finding the Fourth Proportional to 75,252.80, 112,918.08 and 40,203.20

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Solution

The fourth proportional to 75,252.80, 112,918.08 and 40,203.20 is: 60,325.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,252.80 : 112,918.08 = 40,203.20 : x
  2. Step 2: Convert to fraction form
    75,252.80/112,918.08 = 40,203.20/x
  3. Step 3: Cross multiply
    75,252.80x = 112,918.08 × 40,203.20
  4. Step 4: Simplify right side
    75,252.80x = 4,539,668,153.86
  5. Step 5: Solve for x
    x = 4,539,668,153.86/75,252.80
  6. Step 6: Final answer
    x = 60,325.57

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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.