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Finding the Fourth Proportional to 64,491.80, 89,066.25 and 44,400.56

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Solution

The fourth proportional to 64,491.80, 89,066.25 and 44,400.56 is: 61,319.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,491.80 : 89,066.25 = 44,400.56 : x
  2. Step 2: Convert to fraction form
    64,491.80/89,066.25 = 44,400.56/x
  3. Step 3: Cross multiply
    64,491.80x = 89,066.25 × 44,400.56
  4. Step 4: Simplify right side
    64,491.80x = 3,954,590,931.77
  5. Step 5: Solve for x
    x = 3,954,590,931.77/64,491.80
  6. Step 6: Final answer
    x = 61,319.29

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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.