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Finding the Fourth Proportional to 48,641.78, 72,962.67 and 11,705.78

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Solution

The fourth proportional to 48,641.78, 72,962.67 and 11,705.78 is: 17,558.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,641.78 : 72,962.67 = 11,705.78 : x
  2. Step 2: Convert to fraction form
    48,641.78/72,962.67 = 11,705.78/x
  3. Step 3: Cross multiply
    48,641.78x = 72,962.67 × 11,705.78
  4. Step 4: Simplify right side
    48,641.78x = 854,084,963.23
  5. Step 5: Solve for x
    x = 854,084,963.23/48,641.78
  6. Step 6: Final answer
    x = 17,558.67

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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.