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Finding the Fourth Proportional to 64,901.68, 89,604.86 and 49,765.26

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Solution

The fourth proportional to 64,901.68, 89,604.86 and 49,765.26 is: 68,707.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,901.68 : 89,604.86 = 49,765.26 : x
  2. Step 2: Convert to fraction form
    64,901.68/89,604.86 = 49,765.26/x
  3. Step 3: Cross multiply
    64,901.68x = 89,604.86 × 49,765.26
  4. Step 4: Simplify right side
    64,901.68x = 4,459,209,155.16
  5. Step 5: Solve for x
    x = 4,459,209,155.16/64,901.68
  6. Step 6: Final answer
    x = 68,707.15

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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.