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Finding the Fourth Proportional to 98,793.88, 136,334.28 and 56,353.12

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Solution

The fourth proportional to 98,793.88, 136,334.28 and 56,353.12 is: 77,766.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,793.88 : 136,334.28 = 56,353.12 : x
  2. Step 2: Convert to fraction form
    98,793.88/136,334.28 = 56,353.12/x
  3. Step 3: Cross multiply
    98,793.88x = 136,334.28 × 56,353.12
  4. Step 4: Simplify right side
    98,793.88x = 7,682,862,040.95
  5. Step 5: Solve for x
    x = 7,682,862,040.95/98,793.88
  6. Step 6: Final answer
    x = 77,766.58

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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.