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Finding the Fourth Proportional to 64,653.78, 89,201.45 and 39,152.00

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Solution

The fourth proportional to 64,653.78, 89,201.45 and 39,152.00 is: 54,017.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,653.78 : 89,201.45 = 39,152.00 : x
  2. Step 2: Convert to fraction form
    64,653.78/89,201.45 = 39,152.00/x
  3. Step 3: Cross multiply
    64,653.78x = 89,201.45 × 39,152.00
  4. Step 4: Simplify right side
    64,653.78x = 3,492,414,528.63
  5. Step 5: Solve for x
    x = 3,492,414,528.63/64,653.78
  6. Step 6: Final answer
    x = 54,017.17

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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.