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Finding the Fourth Proportional to 92,659.46, 139,142.95 and 57,820.55

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Solution

The fourth proportional to 92,659.46, 139,142.95 and 57,820.55 is: 86,826.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,659.46 : 139,142.95 = 57,820.55 : x
  2. Step 2: Convert to fraction form
    92,659.46/139,142.95 = 57,820.55/x
  3. Step 3: Cross multiply
    92,659.46x = 139,142.95 × 57,820.55
  4. Step 4: Simplify right side
    92,659.46x = 8,045,321,057.36
  5. Step 5: Solve for x
    x = 8,045,321,057.36/92,659.46
  6. Step 6: Final answer
    x = 86,826.77

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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.