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Finding the Fourth Proportional to 38,999.70, 58,499.55 and 14,043.60

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Solution

The fourth proportional to 38,999.70, 58,499.55 and 14,043.60 is: 21,065.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,999.70 : 58,499.55 = 14,043.60 : x
  2. Step 2: Convert to fraction form
    38,999.70/58,499.55 = 14,043.60/x
  3. Step 3: Cross multiply
    38,999.70x = 58,499.55 × 14,043.60
  4. Step 4: Simplify right side
    38,999.70x = 821,544,280.38
  5. Step 5: Solve for x
    x = 821,544,280.38/38,999.70
  6. Step 6: Final answer
    x = 21,065.40

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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.