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Finding the Fourth Proportional to 64,390.89, 88,859.64 and 36,094.75

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Solution

The fourth proportional to 64,390.89, 88,859.64 and 36,094.75 is: 49,810.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,390.89 : 88,859.64 = 36,094.75 : x
  2. Step 2: Convert to fraction form
    64,390.89/88,859.64 = 36,094.75/x
  3. Step 3: Cross multiply
    64,390.89x = 88,859.64 × 36,094.75
  4. Step 4: Simplify right side
    64,390.89x = 3,207,366,490.89
  5. Step 5: Solve for x
    x = 3,207,366,490.89/64,390.89
  6. Step 6: Final answer
    x = 49,810.87

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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.