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Finding the Fourth Proportional to 64,210.65, 88,617.36 and 36,987.67

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Solution

The fourth proportional to 64,210.65, 88,617.36 and 36,987.67 is: 51,046.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,210.65 : 88,617.36 = 36,987.67 : x
  2. Step 2: Convert to fraction form
    64,210.65/88,617.36 = 36,987.67/x
  3. Step 3: Cross multiply
    64,210.65x = 88,617.36 × 36,987.67
  4. Step 4: Simplify right side
    64,210.65x = 3,277,749,667.95
  5. Step 5: Solve for x
    x = 3,277,749,667.95/64,210.65
  6. Step 6: Final answer
    x = 51,046.82

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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.