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Finding the Fourth Proportional to 64,478.95, 88,989.16 and 36,184.64

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Solution

The fourth proportional to 64,478.95, 88,989.16 and 36,184.64 is: 49,939.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,478.95 : 88,989.16 = 36,184.64 : x
  2. Step 2: Convert to fraction form
    64,478.95/88,989.16 = 36,184.64/x
  3. Step 3: Cross multiply
    64,478.95x = 88,989.16 × 36,184.64
  4. Step 4: Simplify right side
    64,478.95x = 3,220,040,649.74
  5. Step 5: Solve for x
    x = 3,220,040,649.74/64,478.95
  6. Step 6: Final answer
    x = 49,939.41

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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.