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Finding the Fourth Proportional to 64,515.66, 89,033.19 and 36,220.62

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Solution

The fourth proportional to 64,515.66, 89,033.19 and 36,220.62 is: 49,985.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,515.66 : 89,033.19 = 36,220.62 : x
  2. Step 2: Convert to fraction form
    64,515.66/89,033.19 = 36,220.62/x
  3. Step 3: Cross multiply
    64,515.66x = 89,033.19 × 36,220.62
  4. Step 4: Simplify right side
    64,515.66x = 3,224,837,342.38
  5. Step 5: Solve for x
    x = 3,224,837,342.38/64,515.66
  6. Step 6: Final answer
    x = 49,985.34

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1.5x scale

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.