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Finding the Fourth Proportional to 77,396.90, 106,808.92 and 43,412.93

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Solution

The fourth proportional to 77,396.90, 106,808.92 and 43,412.93 is: 59,910.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,396.90 : 106,808.92 = 43,412.93 : x
  2. Step 2: Convert to fraction form
    77,396.90/106,808.92 = 43,412.93/x
  3. Step 3: Cross multiply
    77,396.90x = 106,808.92 × 43,412.93
  4. Step 4: Simplify right side
    77,396.90x = 4,636,887,524.76
  5. Step 5: Solve for x
    x = 4,636,887,524.76/77,396.90
  6. Step 6: Final answer
    x = 59,910.51

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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.