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Finding the Fourth Proportional to 58,015.20, 86,893.20 and 47,647.20

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Solution

The fourth proportional to 58,015.20, 86,893.20 and 47,647.20 is: 71,364.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,015.20 : 86,893.20 = 47,647.20 : x
  2. Step 2: Convert to fraction form
    58,015.20/86,893.20 = 47,647.20/x
  3. Step 3: Cross multiply
    58,015.20x = 86,893.20 × 47,647.20
  4. Step 4: Simplify right side
    58,015.20x = 4,140,217,679.04
  5. Step 5: Solve for x
    x = 4,140,217,679.04/58,015.20
  6. Step 6: Final answer
    x = 71,364.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.