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Finding the Fourth Proportional to 92,841.84, 128,024.76 and 55,108.80

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Solution

The fourth proportional to 92,841.84, 128,024.76 and 55,108.80 is: 75,992.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,841.84 : 128,024.76 = 55,108.80 : x
  2. Step 2: Convert to fraction form
    92,841.84/128,024.76 = 55,108.80/x
  3. Step 3: Cross multiply
    92,841.84x = 128,024.76 × 55,108.80
  4. Step 4: Simplify right side
    92,841.84x = 7,055,290,893.89
  5. Step 5: Solve for x
    x = 7,055,290,893.89/92,841.84
  6. Step 6: Final answer
    x = 75,992.58

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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.