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Finding the Fourth Proportional to 48,295.70, 72,443.55 and 13,238.90

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Solution

The fourth proportional to 48,295.70, 72,443.55 and 13,238.90 is: 19,858.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,295.70 : 72,443.55 = 13,238.90 : x
  2. Step 2: Convert to fraction form
    48,295.70/72,443.55 = 13,238.90/x
  3. Step 3: Cross multiply
    48,295.70x = 72,443.55 × 13,238.90
  4. Step 4: Simplify right side
    48,295.70x = 959,072,914.10
  5. Step 5: Solve for x
    x = 959,072,914.10/48,295.70
  6. Step 6: Final answer
    x = 19,858.35

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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.