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Finding the Fourth Proportional to 64,661.54, 89,203.61 and 46,728.14

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Solution

The fourth proportional to 64,661.54, 89,203.61 and 46,728.14 is: 64,463.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,661.54 : 89,203.61 = 46,728.14 : x
  2. Step 2: Convert to fraction form
    64,661.54/89,203.61 = 46,728.14/x
  3. Step 3: Cross multiply
    64,661.54x = 89,203.61 × 46,728.14
  4. Step 4: Simplify right side
    64,661.54x = 4,168,318,096.93
  5. Step 5: Solve for x
    x = 4,168,318,096.93/64,661.54
  6. Step 6: Final answer
    x = 64,463.64

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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.