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Finding the Fourth Proportional to 65,009.64, 89,715.06 and 36,719.52

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Solution

The fourth proportional to 65,009.64, 89,715.06 and 36,719.52 is: 50,673.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,009.64 : 89,715.06 = 36,719.52 : x
  2. Step 2: Convert to fraction form
    65,009.64/89,715.06 = 36,719.52/x
  3. Step 3: Cross multiply
    65,009.64x = 89,715.06 × 36,719.52
  4. Step 4: Simplify right side
    65,009.64x = 3,294,293,939.97
  5. Step 5: Solve for x
    x = 3,294,293,939.97/65,009.64
  6. Step 6: Final answer
    x = 50,673.93

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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.