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Finding the Fourth Proportional to 73,763.60, 110,688.60 and 27,021.20

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Solution

The fourth proportional to 73,763.60, 110,688.60 and 27,021.20 is: 40,547.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,763.60 : 110,688.60 = 27,021.20 : x
  2. Step 2: Convert to fraction form
    73,763.60/110,688.60 = 27,021.20/x
  3. Step 3: Cross multiply
    73,763.60x = 110,688.60 × 27,021.20
  4. Step 4: Simplify right side
    73,763.60x = 2,990,938,798.32
  5. Step 5: Solve for x
    x = 2,990,938,798.32/73,763.60
  6. Step 6: Final answer
    x = 40,547.63

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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.