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Finding the Fourth Proportional to 92,551.40, 138,827.10 and 85,334.30

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Solution

The fourth proportional to 92,551.40, 138,827.10 and 85,334.30 is: 128,001.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,551.40 : 138,827.10 = 85,334.30 : x
  2. Step 2: Convert to fraction form
    92,551.40/138,827.10 = 85,334.30/x
  3. Step 3: Cross multiply
    92,551.40x = 138,827.10 × 85,334.30
  4. Step 4: Simplify right side
    92,551.40x = 11,846,713,399.53
  5. Step 5: Solve for x
    x = 11,846,713,399.53/92,551.40
  6. Step 6: Final answer
    x = 128,001.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.