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Finding the Fourth Proportional to 65,390.64, 97,937.70 and 63,914.42

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Solution

The fourth proportional to 65,390.64, 97,937.70 and 63,914.42 is: 95,726.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,390.64 : 97,937.70 = 63,914.42 : x
  2. Step 2: Convert to fraction form
    65,390.64/97,937.70 = 63,914.42/x
  3. Step 3: Cross multiply
    65,390.64x = 97,937.70 × 63,914.42
  4. Step 4: Simplify right side
    65,390.64x = 6,259,631,291.63
  5. Step 5: Solve for x
    x = 6,259,631,291.63/65,390.64
  6. Step 6: Final answer
    x = 95,726.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.