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Finding the Fourth Proportional to 64,959.74, 89,643.76 and 36,666.62

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Solution

The fourth proportional to 64,959.74, 89,643.76 and 36,666.62 is: 50,599.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,959.74 : 89,643.76 = 36,666.62 : x
  2. Step 2: Convert to fraction form
    64,959.74/89,643.76 = 36,666.62/x
  3. Step 3: Cross multiply
    64,959.74x = 89,643.76 × 36,666.62
  4. Step 4: Simplify right side
    64,959.74x = 3,286,933,051.74
  5. Step 5: Solve for x
    x = 3,286,933,051.74/64,959.74
  6. Step 6: Final answer
    x = 50,599.55

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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.