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Finding the Fourth Proportional to 64,048.92, 88,389 and 40,176.60

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Solution

The fourth proportional to 64,048.92, 88,389 and 40,176.60 is: 55,444.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,048.92 : 88,389 = 40,176.60 : x
  2. Step 2: Convert to fraction form
    64,048.92/88,389 = 40,176.60/x
  3. Step 3: Cross multiply
    64,048.92x = 88,389 × 40,176.60
  4. Step 4: Simplify right side
    64,048.92x = 3,551,169,497.40
  5. Step 5: Solve for x
    x = 3,551,169,497.40/64,048.92
  6. Step 6: Final answer
    x = 55,444.64

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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.