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Finding the Fourth Proportional to 66,921.72, 92,350.62 and 37,113.72

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Solution

The fourth proportional to 66,921.72, 92,350.62 and 37,113.72 is: 51,216.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,921.72 : 92,350.62 = 37,113.72 : x
  2. Step 2: Convert to fraction form
    66,921.72/92,350.62 = 37,113.72/x
  3. Step 3: Cross multiply
    66,921.72x = 92,350.62 × 37,113.72
  4. Step 4: Simplify right side
    66,921.72x = 3,427,475,052.51
  5. Step 5: Solve for x
    x = 3,427,475,052.51/66,921.72
  6. Step 6: Final answer
    x = 51,216.18

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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.