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Finding the Fourth Proportional to 92,931.32, 128,247.96 and 52,650.80

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Solution

The fourth proportional to 92,931.32, 128,247.96 and 52,650.80 is: 72,659.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,931.32 : 128,247.96 = 52,650.80 : x
  2. Step 2: Convert to fraction form
    92,931.32/128,247.96 = 52,650.80/x
  3. Step 3: Cross multiply
    92,931.32x = 128,247.96 × 52,650.80
  4. Step 4: Simplify right side
    92,931.32x = 6,752,357,692.37
  5. Step 5: Solve for x
    x = 6,752,357,692.37/92,931.32
  6. Step 6: Final answer
    x = 72,659.66

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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.