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Finding the Fourth Proportional to 64,980.56, 97,509.72 and 28,044.56

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Solution

The fourth proportional to 64,980.56, 97,509.72 and 28,044.56 is: 42,083.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,980.56 : 97,509.72 = 28,044.56 : x
  2. Step 2: Convert to fraction form
    64,980.56/97,509.72 = 28,044.56/x
  3. Step 3: Cross multiply
    64,980.56x = 97,509.72 × 28,044.56
  4. Step 4: Simplify right side
    64,980.56x = 2,734,617,542.06
  5. Step 5: Solve for x
    x = 2,734,617,542.06/64,980.56
  6. Step 6: Final answer
    x = 42,083.62

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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.