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Finding the Fourth Proportional to 52,887.77, 79,409.42 and 21,783.77

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Solution

The fourth proportional to 52,887.77, 79,409.42 and 21,783.77 is: 32,707.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,887.77 : 79,409.42 = 21,783.77 : x
  2. Step 2: Convert to fraction form
    52,887.77/79,409.42 = 21,783.77/x
  3. Step 3: Cross multiply
    52,887.77x = 79,409.42 × 21,783.77
  4. Step 4: Simplify right side
    52,887.77x = 1,729,836,541.11
  5. Step 5: Solve for x
    x = 1,729,836,541.11/52,887.77
  6. Step 6: Final answer
    x = 32,707.69

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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.