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Finding the Fourth Proportional to 66,812.94, 92,209.62 and 38,519.64

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Solution

The fourth proportional to 66,812.94, 92,209.62 and 38,519.64 is: 53,161.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,812.94 : 92,209.62 = 38,519.64 : x
  2. Step 2: Convert to fraction form
    66,812.94/92,209.62 = 38,519.64/x
  3. Step 3: Cross multiply
    66,812.94x = 92,209.62 × 38,519.64
  4. Step 4: Simplify right side
    66,812.94x = 3,551,881,366.94
  5. Step 5: Solve for x
    x = 3,551,881,366.94/66,812.94
  6. Step 6: Final answer
    x = 53,161.58

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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.