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Finding the Fourth Proportional to 79,658.91, 109,929.30 and 43,848.75

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Solution

The fourth proportional to 79,658.91, 109,929.30 and 43,848.75 is: 60,511.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,658.91 : 109,929.30 = 43,848.75 : x
  2. Step 2: Convert to fraction form
    79,658.91/109,929.30 = 43,848.75/x
  3. Step 3: Cross multiply
    79,658.91x = 109,929.30 × 43,848.75
  4. Step 4: Simplify right side
    79,658.91x = 4,820,262,393.38
  5. Step 5: Solve for x
    x = 4,820,262,393.38/79,658.91
  6. Step 6: Final answer
    x = 60,511.28

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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.