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Finding the Fourth Proportional to 64,315.92, 88,751.88 and 36,021.36

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Solution

The fourth proportional to 64,315.92, 88,751.88 and 36,021.36 is: 49,707.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,315.92 : 88,751.88 = 36,021.36 : x
  2. Step 2: Convert to fraction form
    64,315.92/88,751.88 = 36,021.36/x
  3. Step 3: Cross multiply
    64,315.92x = 88,751.88 × 36,021.36
  4. Step 4: Simplify right side
    64,315.92x = 3,196,963,420.16
  5. Step 5: Solve for x
    x = 3,196,963,420.16/64,315.92
  6. Step 6: Final answer
    x = 49,707.19

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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.