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Finding the Fourth Proportional to 73,008.76, 100,752.26 and 42,788.08

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Solution

The fourth proportional to 73,008.76, 100,752.26 and 42,788.08 is: 59,047.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,008.76 : 100,752.26 = 42,788.08 : x
  2. Step 2: Convert to fraction form
    73,008.76/100,752.26 = 42,788.08/x
  3. Step 3: Cross multiply
    73,008.76x = 100,752.26 × 42,788.08
  4. Step 4: Simplify right side
    73,008.76x = 4,310,995,761.06
  5. Step 5: Solve for x
    x = 4,310,995,761.06/73,008.76
  6. Step 6: Final answer
    x = 59,047.65

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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.