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Finding the Fourth Proportional to 73,075.71, 100,765.45 and 63,432.96

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Solution

The fourth proportional to 73,075.71, 100,765.45 and 63,432.96 is: 87,468.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,075.71 : 100,765.45 = 63,432.96 : x
  2. Step 2: Convert to fraction form
    73,075.71/100,765.45 = 63,432.96/x
  3. Step 3: Cross multiply
    73,075.71x = 100,765.45 × 63,432.96
  4. Step 4: Simplify right side
    73,075.71x = 6,391,851,310.86
  5. Step 5: Solve for x
    x = 6,391,851,310.86/73,075.71
  6. Step 6: Final answer
    x = 87,468.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.