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Finding the Fourth Proportional to 92,879.16, 128,184.17 and 55,153.41

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Solution

The fourth proportional to 92,879.16, 128,184.17 and 55,153.41 is: 76,118.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,879.16 : 128,184.17 = 55,153.41 : x
  2. Step 2: Convert to fraction form
    92,879.16/128,184.17 = 55,153.41/x
  3. Step 3: Cross multiply
    92,879.16x = 128,184.17 × 55,153.41
  4. Step 4: Simplify right side
    92,879.16x = 7,069,793,637.30
  5. Step 5: Solve for x
    x = 7,069,793,637.30/92,879.16
  6. Step 6: Final answer
    x = 76,118.19

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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.