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Finding the Fourth Proportional to 64,899.63, 89,509.66 and 44,751.89

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Solution

The fourth proportional to 64,899.63, 89,509.66 and 44,751.89 is: 61,721.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,899.63 : 89,509.66 = 44,751.89 : x
  2. Step 2: Convert to fraction form
    64,899.63/89,509.66 = 44,751.89/x
  3. Step 3: Cross multiply
    64,899.63x = 89,509.66 × 44,751.89
  4. Step 4: Simplify right side
    64,899.63x = 4,005,726,570.15
  5. Step 5: Solve for x
    x = 4,005,726,570.15/64,899.63
  6. Step 6: Final answer
    x = 61,721.87

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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.