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Finding the Fourth Proportional to 98,794.16, 136,348.92 and 56,342.96

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Solution

The fourth proportional to 98,794.16, 136,348.92 and 56,342.96 is: 77,760.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,794.16 : 136,348.92 = 56,342.96 : x
  2. Step 2: Convert to fraction form
    98,794.16/136,348.92 = 56,342.96/x
  3. Step 3: Cross multiply
    98,794.16x = 136,348.92 × 56,342.96
  4. Step 4: Simplify right side
    98,794.16x = 7,682,301,745.60
  5. Step 5: Solve for x
    x = 7,682,301,745.60/98,794.16
  6. Step 6: Final answer
    x = 77,760.69

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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.