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Finding the Fourth Proportional to 64,854.36, 89,506.80 and 36,561.96

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Solution

The fourth proportional to 64,854.36, 89,506.80 and 36,561.96 is: 50,459.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,854.36 : 89,506.80 = 36,561.96 : x
  2. Step 2: Convert to fraction form
    64,854.36/89,506.80 = 36,561.96/x
  3. Step 3: Cross multiply
    64,854.36x = 89,506.80 × 36,561.96
  4. Step 4: Simplify right side
    64,854.36x = 3,272,544,041.33
  5. Step 5: Solve for x
    x = 3,272,544,041.33/64,854.36
  6. Step 6: Final answer
    x = 50,459.89

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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.