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Finding the Fourth Proportional to 77,408.58, 106,815.30 and 43,410.07

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Solution

The fourth proportional to 77,408.58, 106,815.30 and 43,410.07 is: 59,901.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,408.58 : 106,815.30 = 43,410.07 : x
  2. Step 2: Convert to fraction form
    77,408.58/106,815.30 = 43,410.07/x
  3. Step 3: Cross multiply
    77,408.58x = 106,815.30 × 43,410.07
  4. Step 4: Simplify right side
    77,408.58x = 4,636,859,759.36
  5. Step 5: Solve for x
    x = 4,636,859,759.36/77,408.58
  6. Step 6: Final answer
    x = 59,901.11

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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.